The amusing thing is that emailed patches and a listserv aren't actually all that different from github pull requests at the end of the day. In either case you're sending some code you wrote along to a group and asking them to look over it. The only real difference is the lack of a familiar web interface that's uniform across all projects and reduces friction to near zero, but emailing a patch hardly adds much friction in practice.

I think the primary difference is that it removes some of the incentive to status seek because there's no centralized network operator tracking contributions and displaying them on your profile for others to look at.

That said, the linked post explicitly says that Ladybird won't be accepting emailed patches, reviewing changes from downstream forks, or anything else. Hopefully that's not the case since entirely closing off the project would probably be an overreaction as well as jeopardize its future.

It’s really different because there’s no public signal between the email and the project itself. You can maybe search the log and see your patch, but there’s no central identity where you can brag about it. At most you can get a notice in a CONTRIBUTORS text file, or in the copyright header.