[0] sr.ht
[1] codeberg.org
[0] sr.ht
[1] codeberg.org
I'd guess the technically correct answer to this question is "yes". But sourcehut has very good mailing list support, that is essentially equivalent to github pull requests.
Still, I find the wording of your question a bit prejudiced... as if I asked "does github still require pull requests via a proprietary interface instead of just sending the patches?"
Is there?
Compare that with GitHub where the workflow is push changes to fork, select branch, click to create a PR, write the description in a convenient web form and submit. Less friction and less opportunities to mess up. The solution to a centralized forge is a decentralzied forge, not no forge.
The email workflow has features that GitHub doesn't have. Most people do without them and don't really feel a need to learn about them, and that's fine. But would Linux be better off with GitHub? Not sure.