Interesting that COMP.LANG.LISP has posts dating last month. I guess the network isn't dead. I wonder if there are groups with interesting recent activity.
https://www.usenetarchives.com/threads.php?id=comp.lang.smal...
I see the posts there are pretty interesting. This one led me to a bit of a rabbit hole:
https://www.usenetarchives.com/view.php?id=comp.lang.smallta...
Was really suprised to see this, a page an a half of posts and healthy replies from just this last month. I really wonder what type of people still hang out there.
comp.arch (1986-) easily has 10 times as much present day activity.
How active is another topic.
There are contributors from then still active now too.