just find it hard to imagine Fury is gonna drag Peter into another dimension. Plus we have Toomes, Gargan, and most likely chameleon in the none. All of this plus Mysterio screams street level, not dimension-hopping.
I suspect a grand plot to make Peter believes he's dealing with fallout from Endgame, but ultimately it's nothing of the sort. The best thing for the MCU would to actually use this as an excuse to prove there cannot be any unknown realities from the effects of Endgame.