The DCEU is a dumpster fire. In their race to keep up with Marvel and cash in on superhero team ups they fucked everything up.
MoS was bad and I absolutely despised it at the time but by comparison to BvS it is Citizen Kane. At least it had some good moments and performances.
BvS was a trainwreck of monumental proportions and a point of no return. Batman and Superman are completely retarded. The number of stupid plot contrivances and outright holes are downright comical. Jesse Eisenberg... I cant really even knock him cause he was so horrifically miscast. Then they have to try to cram in Death of Superman with nowhere near enough build up into an already crowded movie. In the comics his death and the aftermath is a colossal event, in BvS its a punchline (he barely even gets a redemption arc after it seems the whole world inexplicably hates him halfway through the movie - half the world is probably still happy he is dead at the end). Then they didnt even have the balls to keep him dead til the end, they had to hint it then immediately bring him back in Justice League. Colossal waste of one of DC's best storylines (Death of Superman) and of Doomsday (who looks downright awful in their pure CGI)
Suicide Squad was fucking atrocious, first movie I have walked out on half way through. Boring, soulless... I just didn't give a shit about the story or any of the paper thin characters. Top it off with making the Joker a side character plot device, though its probably for the best as it is by far the worst take on the joker. Assault on Arkham did basically the same story but radically better.
Justice League was a mess. I cant really blame them cause New 52 made it this way, but for starters it doesnt feel like a Justice League movie without Martian Manhunter and Green Lantern (John Stewart or Hal Jordan preferably). The CGI is a complete disaster and looks borderline unrendered in places. Cyborg looks awful and is completely soulless - miss his Teen Titans version. Batman goes from grizzled old BvS Batman to awkward joke cracking Batman to borderline suicidal depressed Batman and randomly shifts around these throughout. Superman's return is telegraphed and whatever. The villain looks like a reskin of Wonder Woman's and is cliche as fuck. Aquaman is cool I guess thanks Jason Momoa. Wonder Woman goes from a fairly nuanced character in her movie to "wahhhh I loved a man once but he died
". Just not a good movie.