It's not the state of it that is the issue of why people still talk about Snyderverse, it's the attachment people have to certain IPs and the eventual change in casting that happens as time goes on.
Adam West was THE Batman for generations, and everyone threw a fit over Keaton being the new Batman in the 80s. Then the movie was released, time went on and Keaton became THE Batman for many people and Kilmer, Clooney, Bale, and Affleck all got backlash over their casting, but now most of them are accepted by some as THEIR Batman.
Look at the constant comparisons to Christopher Reeves that MoS and Henry Cavil received. Then suddenly after people saw the movies and Cavil was Superman in a few movies, people now claim he is THE Superman.
Same example can be used on Tobey, Andrew, and Holland with Spiderman.
What we are seeing now is the same resistance to change from what was the Snyderverse, into whatever Gunn has planned.
People always hate changes in their IPs, until they see it, then suddenly the new actor is THE version of a character. As long as it is good, which we won't know till we actually see it.
All this noise from social media does nothing but cause problems with production. and causes execs to second guess the plans of the hired creators. A good example of that coincidently enough is the Snyderverse.