I am also new here and I am a long time lurker, 2008, from the place that shall not be named.
My initial feel is that Lemmy is very much like pre Digg days and a kin to the traditional style forum boards where discussions aren’t old news when the post is only 12 hrs old.
This is a breath of fresh air even with the growing pains I expect may come with the sudden influx of refugees.
Someone correct me, but I believe it is a bug in the latest version. Saw it mentioned elsewhere that they are aware that sorting by Hot does not work. If the server is reset it will work correctly for a while. They don’t have a timeline for a fix that I know of. Still very new here.