Before Snyder superhero films were mostly just worthless theme park rides made for people to shovel popcorn in their mouths and keep people entertained for a couple hours. Then, Snyder came into the genre and made bold artistic statements that asked questions, made people think, and had real meaning. Even directors like Nolan had never pushed the envelope this far. Snyder himself paved the way for serious complex works of art in comic book cinema and without him we wouldn't have gotten movies like Logan or Joker.
Enter Gunn. He comes in, kills the Snyderverse, and ruins evening Snyder accomplished. Gunn was always the one infecting cinema with cringe quippy humor and ragtag found family BS. You know what movies Gunn inspired? Borderlands and Star Trek: Section 31, two of the worst movies in the last year. Unlike Snyder, Gunn has had a net-negative effect on cinema as a whole, and now he's spreading his disease to DC.
The new Superman movie looks exactly like what everyone thought. The ragtag group of asshole heroes like GOTG, silly dumb jokes like Krypto hurting Superman. After Snyder did so much to elevate these dumb movies, Gunn just comes in and knocks it all down with 1 swing. The restoration of the Snyderverse is the last chance to save cinema before everything is infected by Gunn's influence. God, please let this Superman bomb.