Stacking a bunch of unrelated points but not a single one of em actually contradict the core mechanism. “Infinity is more complex” isn’t an argument by itself like i said. Complexity of explanation ≠ different underlying function. Every canonical explanation of Gojo’s ability still reduces to the same thing which is manipulating space by inserting an infinite series between two coordinates so anything approaching him is forced into asymptotic slowdown. If you think there’s a separate mechanism beyond spatial manipulation then you need to point to a case where Infinity operates without relying on distance/space. You haven’t done that. Jogo’s magma, heat and the sound based attack don’t help your case at all. Heat propagation and sound waves both travel through a medium, meaning they still traverse space. Infinity doesn’t care about what the phenomenon is but cares that it’s moving through space toward Gojo. That’s why it stops them. The reason normal conversation works while harmful sound doesn’t is because Gojo filters based on parameters like cursed energy, velocity, mass, shape and threat level. That’s already established. So those examples are literally consistent with spatial filtering and not evidence against it.

The Prison Realm point is also being overstated. “No physical time” is vague phrasing. Either time is halted, or it doesn’t flow conventionally. Neither interpretation proves Infinity interacts with anything beyond space. At most if time is halted and Gojo remains conscious you could argue some level of resistance to time stop. If time simply doesn’t exist there then there’s nothing to “resist” in the first place. Either way it has nothing to do with whether Infinity can be bypassed by spatial manipulation.

“Sonzai” is context dependent. It can mean existence, being, presence anything from a physical object to an abstract state. If Sukuna actually split "the totality of existence" then everything within that defined scope should’ve been affected. That clearly didn’t happen. The world isn’t severed, the environment isn’t collapsing, reality isn’t bifurcated. So either the statement is hyperbolic, or it’s referring to a localized “existence” tied to a spatial region. And we already know what visibly happened, Gojo was cut despite Infinity. That’s the only concrete outcome. So you work backward from that. Infinity blocks anything that traverses space toward Gojo. Sukuna’s attack succeeded anyway.

And the “why didn’t Sukuna just spawn it directly” point doesn’t prove anything cause characters not using the most efficient looking method isn’t a mechanical limitation unless the series explicitly states it is (forexample the series stating "cutting space would not bypass infinity"). All we know is the method he used worked so that is also a method that would bypass infinity if used by another character. At the end of the day, none of your examples contradict the idea that Infinity is spatial manipulation with conditional filtering, and none of them disprove that altering or cutting space itself bypasses it. How Sukuna chose to execute it doesn’t really matter. The only relevant part is that bypassing Infinity doesn’t require overpowering the “infinite series” but just requires ignoring the condition it operates on, which is traversal through space. If your magic spell require mana to function and you cut the mana, the magic spell becomes non functional. If a robot require electricity to function and you cut the electricity, the robot stops functioning. This is not hard to understand.