I think at some point it would warrant a discussion about replacing the official lemmy-ui with one of them, as the lemmy-ui is quite full of bugs and apparently a nearly unmaintainable code-mess. The official devs also started re-writing one from scratch, but I am not very convinced of their approach as it looks again like one of these NIH Rust projects.

Otherwise, currently they are not maintenance intensive to run or need much system resources, so I don't think I'll retire them soon. However all of them are quite young projects and there tends to be a certain natural attrition, especially when there are so many alternative front-ends like for Lemmy right now (Voyager would be another one worth trying). So I think some of them will not be updated any more in the not too far future and given the frequent API changes in Lemmy stop working soon after. So don't get too attached to any of them right now.