Wonder Woman showed that when DC Suits get out of their own way, they can make a good movie....
DC has some of the best source material to work from, yet they always want to eff it up when they go to make a movie from it.
Just as some people think that George Reeves will always be the best Superman and Adam West will always be Batman, no one will ever eclipse Vinny Chase as Aquaman.
Yes. The Suits mandated Justice League not exceed two hours - by even one minute. Absurd.
It was never going to be great with first Snyder and then Whedon in charge, but that guaranteed both story and character would suffer. I suspect that stricture also necessitated more rather than fewer reshoots than would otherwise have been needed - the ones with the invisible mustache.
Suits never get it. Never. See Star Trek (OS). See Firefly.