Why are the plot lines "crap that don't relate to the main canon"?
The main canon is the mainline Pokémon games. Things like Dark Matter, the Bittercold, Time Gears, and such things do not exist in those, and Primal Dialga's existence directly contradicts the primary canon. Any other part of that entire media disagrees with the mainline Pokemon games, the mainline games wins out by being the primary canon.
I think you forgot that Dark Matter was literally going to throw all of creation into the voidlands he made, and that Oblivion wing does erase things
Even if he wasn't non-canon, he was doing nothing of the sort. He was going to throw a single planet into the sun, to get its inhabitants into the voidlands. And Oblivion wing has never erased. What it does is:
1. Life drain
2. Petrification
3. Instant death
Nothing more, nothing less. And that's coming from someone whose favorite Legendary is Yveltal.
Why does this even matter here? His true form is just his spirit, and Dark Matter erased it. Also, Dark Matter has the power of the tree of life which sustains all Pokemon in Super Mystery Dungeon, including Arceus' true form, because his true form is also a Pokemon
No. Arceus' true form is not his spirit, as he predates the concept of spirit, and is, according to Occam's Razor, incompatible with the concept as a result. His true form is his 'heart'. And Dark Matter did not erase the true form. In fact, there is absolutely no evidence Dark Matter ever interacted with the true form. He
petrified an
avatar.
He shared the power from his plates among all the Pokemon in the early days of the Pokemon universe. Sharing power with someone doesn't mean you gave them all their power. Furthermore, its not impossible for Pokemon to just surpass him. Xerneas also shares power with Arceus and did it to bring him back anyways
It kind of does mean that you gave them all their power, when you created, and embody, the very concepts their power stem from. And because of this, yes, it
is impossible for Pokemon to surpass him. If you want to beat Arceus with, for example, Flamethrower, your Flamethrower would have to transcend the concept of fire.
There literally is dude, Xerneas is the opposite of Yveltal,
who takes away all life in the planet and Xerneas and Yveltal
balance life and death across the universe
This is fair, but also irrelevant.
What? Do you think Dialga having a different personality means its not canon? Arceus was willing to help people a lot in the manga and games, while he was trying to kill everyone in the movie, are they now both non canon? And Dialga would obviously go mad when people try to disrupt time
If Dialga doesn't want someone to mess with time, they can't mess with time. Unless they're Arceus, or maybe Giratina. Dialga has multiversal, conceptual time manipulation. If it ain't a God-tier, it ain't messing with that. And again, Time Gears DIRECTLY contradicts the PRIMARY CANON that confirms Dialga regulates time, simply by existing. And again, when something contradicts the primary canon, the primary canon wins out by default. So Time Gears are 100% not canon, and by extension, so is Primal Dialga.
Correct.
Show me where Arceus has plates
that look like this in the games, or where he creates a jewel
by combining his plates, or where he tries to destroy all humans in the game. In fact, show me where he's stated to be omnipresent and embody everything in the anime. And show me where its stated the Creation Trio are a part of him in the games or anime.
If the plates don't look like that in the game, then the Anime's design is non-canon. The existence of the Jewel of Life doesn't contradict the main canon, but it also isn't supported by the main canon. And his desire to destroy all humans is entirely non-canon. And it's stated in both DPPt and Legends, both of them mainline games and primary canon.
It is entirely possible for PMD to just have new info, it doesn't make it non canon, because if it did then the manga, games and anime should all be split
Correct, for the most part. Anything that disagrees with the cosmology as a whole, multiversal constants, and such, will be disregarded, when they come from dubiously-canon sources like Mystery Dungeon.
Where did I say Arceus was growing weaker? I just said other Pokemon can grow stronger. Why are you trying so hard to wank Arceus dude? Do you worship him IRL and think he's a real god too?
You're the one wanking here, my dude. Arguing that Pokemon can somehow surpass the very concepts that allow their powers to exist in the first place. Essentially, by arguing that Arceus isn't the most powerful thing in Pokémon (as it has been stated to be multiple times, both in the primary canon and by Word of God), you are arguing, for example, that a Machamp can, somehow, punch harder than a punch can be. Yemma isn't wanking. Yemma is accepting Arceus' role in the canon. The only evidence there is of Arceus being surpassable is that we know a non-serious avatar of Arceus, that is testing its opponent, can be defeated.