The reason I don't use or consider using SourceHut is… well, look at it.
https://git.sr.ht/~bacardi55/houston
To me a site like GitHub/SourceHut/Codeberg has two functions, one is to actually host the VCS, but the other is to be a useful, inviting public presence for your project. People with little-to-no knowledge of source code should be able to get useful information out of your project landing page.
But every Sourcehut page is bewildering to *me* at first glance, and I've contributed code to DVCSes!