Clouds are inanimate objects, they wouldn't be subject to the Barrier's properties. I also highly doubt Frisk bringing water into Hotland is the only time evaporation has ever happened, not to mention there's literally rain in some parts of Waterfall. The barrier doesnt even matter since outside clouds couldnt travel through. The rain is clearly coming from the waterfall and doesnt function as normal rain would in the first place.
For starters, there are many mini waterfalls widespread across that part of the game which are shown in the foreground. Second, you logic of "its to widespread to be a waterfall" is a joke. In the area where it rains, miniature waterfalls are seen being widespread across the area. There are so many ways a waterfall could create "rain" like that in the underground noteably by passing over the ceiling and leaking through (which every part of the waterfall area has including the room which comes immediately after the place where it is supposedly raining)
And most importantly, the rain does not function like rain from natural clouds would at all.
The rain literally only focuses on two specific paths and does not affect anything else, and literally cuts off at the next turning. And on top of that, this rain has been seen
over a shrine and focusing on a 1/1 metre space constantly without even moving at all
You are claiming this thing is widespread as if it were being caused by actual rainclouds when it is specifically and constantly focused on two pathways, and is falling from then same location where miniature waterfalls are also coming down from the "sky" as well. It is so blatantly coming from a waterfall and not a (right angle shaped) rain cloud. How can you not see the flaws in your logic?
Except specificity to a hyperbole makes it confusing. If something went a few yards up and someone said it was reaching the realm of the clouds, people would be wondering what tf he was talking about.
No they would not.
So you're saying that just because he's sentient and a monster that means he doesn't operate like a volcano? And magma is literally lava that hasn't come out yet, of course he wouldn't have access to the Earth's crust.
In addition to the fact that he is literally just magic and all of his attacks are magical, yes. He shows countless signs of functioning as a volcano wouldnt and has nothing but vague similarities made to only represent a volcano. It is like me saying that asgore is an actual goat or froggit is an actual frog. Asgore is a goat type monster, froggit is a frog type monster, vulkin is a volcano type monster, sans is a skeleton type monster etc. Just because they are themed in a certain fashion, that does not mean they follow the exact functions as whatever they are themed as.
The fact that they can actually create these attacks as constructs instead of as a 2D dodging attack looks good for a smiling cloud that shoots lightning. Also, I have a feeling that you wouldn't have mentioned the smiley face on the cloud if Undertale was a 3D game.
I think you're making the criteria a bit too specific. Just because Sans and Papyrus are monsters doesn't negate the fact that they are skeletons, and vice versa.
That beam actually had the properties of a laser more than straight up electricity, plus several other characters have electric attacks and they don't look like that. It didnt have any properties of a lazer. It made the exact same buzzing noise as electrical objects in undertale make (e.g. papyruses electric ball) and represents electricity through shape. Other electrical objects being fired as danmaku projectiles does not contradict it being electricity based.
You're right, Ice Cap does have less HP, but he's also weaker than Snowdrake. Photoshop Flowey actually has more HP than Asgore does, by almost twice the amount. And yes it can, for the same reason we scale ATK and DEF. Yeah. And based on defence asgore would end up scaling above a weakened flowey. On top of that hp is linear and if used for scaling, would put everyone in undertale (except asriel, mettaton and a few others) at the same level.
Also this blatantly red herrins away from the fact that jerry is more durable than the other snowdin monsters and yet he has lower hp. You seem to be derailing this topic a lot.
Can you give a reason then? It also explains why Undyne is more durable than Papyrus (HP being canon or ATK affecting durability, pick one) and why there's not too big of a Durability gap between Snowdin monsters.
Nice False Dilemma. Neither hp nor attack affecting defence can be used for scaling. Frisk when he raises his attack through weapons does not have his durability affected at all for a starters. Hp does not negate the amount of damage you do to somebody. It is literally a gameplay mechanic which is never once been stated or referenced as canon in verse and has never been remotely implied to affect stats (which are the only things used to show standing in verse). Hp if cannon would be linear by your own logic and would scale other characters finitely to beings like flowey.
Why would you need Jerry to be as durable as Papyrus? Besides, that can still be explained with HP. And how would it make anything unquantifiable or cause anything to become inconsistent? The fact that everybodys stats would become unquantifiable and deciding what their stats would be by raising defence by attack (and not visa versa) along with hp would mean that the monster stats would be guesswork.
And all of this because you want to insert headcannon that hp and attack have effect on durability despite never implied or shown and only leading to illogical scaling.
Majority of your argument is using the logic of "This scenario that i painted out would explain my claim, therefore its true". Yet you are not proving why said scenario is even true in the first place, and using circular argument by going back to your original claim e.g. "It also explains why Undyne is more durable than Papyrus". Arguing that it explains something that is never even proven in the first place is absolute fallacious nonsense.
Also "why there's not too big of a Durability gap between Snowdin monsters" is something my own claim would be consistent with. It works both ways.