If suggestion algorithms cannot be swayed by payment, sponsorship etc., people will probably try to boost visibility via numbers (i.e. bots). I wonder whether such a website would benefit from the invite-only model of lobste.rs.

being able to build your own feeds (and swap apps) like on ATProto seems a better model to me, but most people do not build their own there, they take what is given to them more often than not

I haven't looked at this other than a quick glance to see it does not look like a social app