I think Hamilton was fine in what was not a terribly exciting film, which I blame the script and direction for. I think the big problem with Dark Fate was that, from Cameron’s point of view as the guy signing off on the story idea, it was all fresh, new and bold, but from the audience perspective, was a rehash of elements from all of the post-Cameron films jumbled up into a new film that felt mostly “been there, done that.”
There's also the awkward friction between what the director wanted to do with the movie (likely something more irreverent or kookily inventive like Deadpool) and what Cameron would actually let him do.
'Dark Fate' director Tim Miller notes he is unlikely to work with James Cameron again