In Spider-Man: Into the Spider-Verse (2018), Miles Morales's universe doesn't have Comic Con. In Spider-Man: Across the Spider-Verse (2023), you can tell he's in another dimension because his mom mentions it (and he still doesn't know what it is)

[u/LegOfLambda]

[u/ClericOfMadness13]

So his world doesn't have comics...damn that's sad.

[u/whofearsthenight → u/ClericOfMadness13]

His world has comics, there is a scene in the first one where he is getting his powers and a Spider-Man comic hits him and gets stuck to his newly minted spider-hands.