regular folks don't care that muchIt's not about Snyder or Feige. Most people going to Marvel movies know that they've been interconnected since 2008 with Iron Man.
Most people look at these Snyder remnant DC characters with the same actors as part of the same universe no matter how much some people want to wash that away. A lot of people actually care about continuity. And more casual fans are confused if you tell them that no no Aquaman isn't from that same world as Justice League even though it's the same actor and nothing has been established on film to suggest it's some new reality.
We just saw a Spiderman movie with 3 Spiderman from 3 different 'verses' and everyone loved it
Batman 89 is now the main Batman for the DCEU and folks are going to go crazy when he pops up on screen and that movie will also have Batfleck in it
Professor X from the Fox Universe is about to show up in the MCU and folks can't wait
Mamoa and Gadot can keep playing Aquaman and WW with new actors coming in for the other roles and no one will really care because folks like them