I think he can create striking visuals, but has a terrible sense of how to put a narrative together. He exemplifies a wider problem in Hollywood, the assumption of many directors that all they need to know is the visual and editorial side of filmmaking and that will somehow magically make them good at writing. So we get a ton of movies with excellent style but incoherent substance.
FIlmmaking is just as much a visual medium as it is a verbal one. Sometimes you can have a well written movie with uninspired visuals. Sometimes you can have a visual masterpiece with a mediocre script. Sometimes you just sit back and let the music do all the heavy lifting *cough*
StarWarsprequels*cough*. It's just different styles of filmmaking. You can't intellectualize Snyder's movies. You just kinda have to let the experience wash over you and feel the feelings. Now, this doesn't work when he's trying to adapt material that's intellectually dense like
Watchmen but something like
Sucker Punch is a perfect vehicle for his style. (It helps that
Sucker Punch is 90% dream sequences.

)
He doesn't bring anything of worth to Batman; he just cribs stuff from The Dark Knight Returns, which is not the end-all and be-all of Batman.
Yeah, but given all of the other different Batman movies we've gotten over the years, it's nice to see someone go all-in on the Frank Miller stuff every once in a while. I don't like it as much as the Tim Burton or Christopher Nolan movies but I enjoy the variety.
IMO, no other hero invites quite such a variety of stylistic reinvention as Batman. I get really edgy whenever someone steps too far out of line with Superman or Spider-Man. But I'd be happy with a billion contradictory Batmans!
Except that Snyder's films are inconsistent in themselves. MoS had story elements that were tossed in without any in-movie justification just because they were expected, and ideas that failed to come together or worked against each other. And BvS was consistent only in its staggering incoherence as a narrative.
Obviously, I'm speaking more about internal consistency. You may not like
Man of Steel and
Batman v. Superman. But if you watch both movies, you can't deny that they're part of the same story and made by the same guy.
Justice League is clearly not made by the same guy and doesn't fit as part of the whole. Any tile, no matter how beautiful, can be wrong if it doesn't fit in with the larger mosaic.
But if you didn't like the Snyder movies to begin with, I can understand not caring about that. It just so happens that I do find
Man of Steel and
Batman v. Superman to be interesting, if flawed, movies. But I can relate to your sentiment. Part of the reason why I like
The Last Jedi is because I really didn't like
The Force Awakens, so I enjoyed seeing
The Last Jedi methodically dismantle everything that
The Force Awakens set-up.

But even then, the 2 movies still fit together in a perverse way. It looks like somebody did it on purpose.
Justice League has almost nothing to do with the previous films apart from having some of the same actors. It's more like "Studio Notes: The Movie."