I think these articles are meant for people who entered the developer ecosystem after GitHub became ubiquitous, because those developers basically only ever known GitHub, and some even see GitHub and Git as synonyms.

The rest of us who started developing before GitHub, or been around communities that self-host their infrastructure, we're already used with everything being spread all over the place, this place accepts patches via email, this one wants a URL to a pastebin containing the patch, others use GitLab, some the public service, others self-hosted, and so on.

I don't think this sort of article is for us, but for the former mentioned usergroup.