I’ve checked out probably a dozen reaction videos from people from all types of backgrounds and channels. The reactions and commentary have been overwhelmingy positive. Snyder fanboys get drowned out.
Movie looks great. A return to what Superman is supposed to be and a Justice League animated series style world
Even seen some reactors that were highly suspicious of Gunn for Superman saying it looks great (I had my own concerns despite his making some good superhero movies).
Therefore I conclude that some people just want shyt to complain about. Does a trailer automatically mean a movie will be good? No but I’m glad the naysayers are largely irrelevant here and I just ignore them and look forward to July.