I'm baffled. Is this sort of like kuro5hin back in the day? The front page looks like that, a bunch of random interspersed posts from different people. Is it blog hosting like wordpress.com where each person has their own blog, except propagated between federated instances? Why would a blogger want to use it instead of a self-hosted blog like Alan Turing (or whoever) intended? If you think your blog might get any traction at all, it seems to me important to own its domain name from the beginning.
It might be cool to have a blogging feature added to Lemmy, sort of like Kuro5hin diaries back in the day. They were like mini-blogs that users could write, alongside the regular slashdot-like news section.