Giant PRs that are squashed into one commit are an anti-pattern. Every commit should contain exactly one logical change AND a descriptive commit message.

Unfortunately a good chunk of the industry doesn't have the discipline to do this.

If you have ever worked in a project where there was discipline around committing, you know there is lots of value in doing so (rebasing becomes easier, you unlock the power of bisect, log is actually useful).

But then you can't use blame to look at the current code state. And it also becomes a nightmare to revert your changes.