Not sure, other matches I've seen made weird arguments that toxic gas could but I wasn't sure on that which is why I didn't mention it.
Ectoplasmic energy has never shown to be or stated to be able to do this in the series or on their profiles. There's also really nothing implying that it actually can bypass closed off dimensions, something that Infinity isn't.
That's incorrect given it's shown that ectoplasmic energy can reach across dimensions when physical objects can't, it's already accepted and on the ghost physiology page so you saying it never did it in the series is false.
Except that's not really how infinity works. It's not a closed off barrier, it just effectively increases the distance required in order to reach him, meaning that a projectile like Ectoplasm blasts should be affected due to its nature of being a projectile
I never said that's what Infinity was. I'm saying that since the Ghost Zone and Human World are separated universes of infinite size but when seeing the other side ghosts can send their ectoplasmic energy across the dimension to the other despite their forms being incapable of passing through it. Meaning they can pass through dimensions despite the distance between them, giving them a form of dimensional travel/Interdimensional range. Infinity is creating infinite space between the two of them, when Danny sees he can't physically punch Gojo, he can send out his energy and it would be capable of passing through Infinity given ghost energy can bypass space given they can send it across dimensions through close off windows in space (effectively bypassing the physical space between them). Heck the Ghost Zone is just a massive hunk of ectoplasmic energy and it can rip holes through space and time passively.
Except you have to understand why Ghosts are considered abstracts in the first place. Ghost are considered to have abstract existence due to being made out of pure emotional energy and can't normally be interacted with in the physical world, meaning they need physical energy in order to be interacted with.
Cursed Energy is extremely similar in this regard, minus the fact that they can't be interacted with in the physical world. However, the fact that A. Ghosts need a physical body in order to interact with the physical world, and B. the fact that ectoplasm energy can affect the real world by causing collateral damage and harming humans, so if Danny is physically manifested, Gojo shouldn't have any problem analyzing his energy and understanding his moves.coutld
You have to understand that ghosts/ghost energy can still interact with physical objects even while intangible, they just need to tune it to do so. In "What You Want", Danny tried his first time not trying to harm a physical object with his energy and fired a solid energy beams that passed through a humans skull without causing them physical damage to which Danny was happy about despite previously praying it worked. In "Public Enemies", Danny coats his hands in ectoplasmic energy hits two humans possessed by ghosts and despite hitting the humans with enough force to send the ghosts flying out their bodies, the humans barely moved and felt no pain. In "Frightmare", Danny fired an energy blast that phased through the floor without causing destruction but could hit Nocturne who was tangible at the time and sent him into a physical object. Even in the case of other ghosts, in "Attack of the Killer Garage Sale", Technus fires a blast that struck Danny's tangible form, Danny then turns intangible to phase through it but the attack still keeps pushing him and both fly through a wall without causing physical damage. Throughout the series ghosts have changed the properties of their ectoplasmic energy, turning into various elements, creating small scale weather effects and so on.
But yes, at their default state ghosts and their energy cannot interact with physical objects, however it's made clear in the verse that they can change the properties of their ghost energy as explained in verse and also shown in the ghost physiology page of the multiple applications of ectoplasmic energy various ghosts have shown that I made sure was linked on every ghosts page. As for them being "extremely similar", I respectfully disagree. Looking at
Curse Energy Manipulation and
Ghost Physiology (Danny Phantom) /
Ectoplasmic Energy pages, it's clear they aren't similar enough. Ectoplasmic Energy/Ghost Energy is a mailable substance that can have it's properties and shaped changed, allowing ghosts to generate various elements (light, electricity, fire, and air), create small scale weather effects, manipulate objects in their area, affect a persons body on a molecular level and cause literal disease, cross through closed off windows in space, amplify the strength of the user. Ghosts use it to construct tangible bodies to interact with the real world, they can even construct their own homes/realms with this energy, it is currently considered 4-D in potency and it's source is a type 1 concept. I don't find these two energy systems similar enough.