If you're using GitHub or gitlab and merging through pull requests, I've found that these commits become duplicative and, given GitHub's rich comments-based collaboration UX, somewhat lossy. It is much easier/more valuable for me to view a commit off main that points to the PR that brought it in and the discussion that took place (along with the original commit in that branch) than to see the individual commit rebased into main without context.

Also, a lot of people (myself included) write really crappy commit messages that don't tell the whole story behind a change. This is another reason why falling back on the PR has been valuable for me.