Sometimes people use compare view and accidentally create pull requests without description from branches on which they do not have any commits.

On popular projects this happens often enough to become annoyance for maintainers.

I don't see any case when opening a pull request from someone else's branch and without a description could be done intentionally.

If you wish to create a pull request, you can always push the content you wish to PR to your fork of the repo and create one.

It does add an extra step if you wish to PR someone else's code (you now have to fetch it from their remote, push it to yours, and then make the PR vs directly cross-repo PR between two repos you don't own).

It's not a heavy extra step though and I don't see this as removing the ability for any number of small PRs.

If I understand the changes correctly, I agree.