GitHub owned by MSFT aside, and also putting their AI push _also_ aside, GitHub has things like Sponsors, Dependabot, and code scanning that you won't find anywhere else. They sure are luring you into ecosystems that require a huge escape velocity, but GitHub serves as less-friction entry point to open source software.
GitLab self hosting is also nice and flexible, but it has a more "enterprise open source" feeling to it. Debian and Drupal can take advantage of it, but I don't see myself hosting mini projects like my mini CSS library that is also used by three other strangers.
Source Hut is really nice too. Admittedly I don't like email based workflows, so I haven't really thought about moving anything there. But Source Hut has "unlisted" repos, which I thought was really clever and missing from other forges.