1) sometimes hooks are configured on commit, and I prefer to have a very quick and lightweight commit action. If I'm changing branches sometimes I'll commit WIP changes so I can easily come back to it later. I know git stash accomplishes a very similar functionality but it's just a preferred workflow.
2) I don't like the feedback I get from git hooks when committing in the VS Code interface. For example, we have a "lint" hook that runs on pre-push. When it fails, I have to run "lint" manually in my terminal anyway to actually see the errors, because VS Code doesn't show me the actual errors. I believe the hook results are available in some other tab or something but I haven't bothered to learn it.
Both of these are just personal preferences, and maybe a little bit of resistance to learning new workflows. I don't consider myself a purist about it and I've never argued about it at work but hopefully this sheds a little light on my perspective.
Edit: regarding the "push and pray" approach, I personally don't do that, I'll run it locally first, I just prefer to run it myself rather than via a hook.