I wouldn't speak of an "open source community". there is no such entity, formally speaking. the best reason however is, in my opinion, network effect. github h

I wouldn't speak of an "open source community". there is no such entity, formally speaking. the best reason however is, in my opinion, network effect. github has been the first big player in this space and is also the default place where people go. However yes, I think that the open source community should move to at least gitlab.com, if not to sourcehut.org.