The writing was a much bigger complaint.
"A plot so entirely predictable and generic that it feels like it was written by an overworked AI, basically consisting of a series of tired and played-out tropes that have been done a million times before; lame attempts at quippy jokes and visual gags that are jarringly at odds with what's actually happening; headache inducing visuals that are so obnoxiously overdone you can barely even process what you're seeing; and an ending that effectively puts everything back exactly as it was before so that there's absolutely no weight or consequence to anything you just saw."
To the extent that CG is even mentioned, it's a negative, but clearly even top-shelf CG wasn't going to save this movie. That's not an argument in favor of spending $200+ million on CGI. Better writing, less CG would be more profitable.