I see the purpose of code versioning in being able to save the code fast, being able to reverse code changes fast and doing code merged with ease.

If some philosophy stays against someone's productivity I don't believe it is a good thing. I would let developers commit in every state they find easy, provided the code builds and the commit comment describes what is being committed.

I think it is the PR which we can push more demands on but not commits.

I, for example, dislike having to track any small change I have made and commit it. I like committing larger parts which contain a functionality.