I just somehow don't think that the current state of "Millions of alt dimensions" will stick around, and I suspect that the next Huge Event MCU film will be resolving that situation somehow, given all the shows and movies tying into it as an impending Bad Situation.
Honestly the X-Men just won't work in the current MCU at all, you can't just have anti-mutant craziness out of nowhere. Wait, mutant powers were a consequence of the 2nd booster shot, and all the Karens and Alex Jones who refused it are upset they have no powers??? And the government destroyed/hid all the remaining doses. Goddamn that would actually work!!!