Well, yes, but hasn't DC character movies having stronger directorial voices been true for decades? Certainly in contrast to the much more tonally coherent MCU?
I don't think we're talking about just directorial choices, though.
James Gunn's Suicide Squad is recognizably a Suicide Squad from the DCU, even if some of his interpretations are different than in the comics. (Peacemaker is a giant bore in the comics and Gunn has managed to make him genuinely interesting and even sympathetic in the Peacemaker TV show.)
All of the various Batmen in the movies are all recognizably Batmen, whether they're played by Adam West or Robert Pattinson. Big tonal range, but the touchstones of the character are all represented in some fashion. West is a lot less broody than Christian Bale, but they're clearly both playing spins on the same character.
For me, and I think for some of the others who also don't like these Snyder movies (and I've seen all three of them, and The Snyder Cut) don't feel like any of the things we expect to see in Superman are represented beyond the surface level.
And this isn't about Snyder or his color choices. Superman Returns was a terrible Superman movie not because of Brandon Routh (who was quite good), but because Superman as a deadbeat dad and stalking Lois Lane are so jarringly out of step with the character.
Even the early 20th century Superman who leapt tall buildings in a single bound and worked at the Daily Star, rather than the Daily Planet, wasn't the kind of guy to knock up Lois Lane, skip town and then peek through her window to see what she's up to later on.
I mean, if the accusation is that he's using an established IP as a cover for a different story he wants to tell, then sure, that's probably true. But that's generally what I (as fan of comic book movies but not comic books) want to see happen.
And that's fair and probably a lot of the basic issue. It's also why fans of the James Bond novels have historically had a lot of opinions about the movies.
It's why I prefer Cuarón's take on Harry Potter to Columbus's, as another example of different flavors of IP adaptation.
I can't imagine even Chris Columbus prefers his take to Cuarón's.