This has a tech solution, but the same people problem. Look at the % that have “leftist” in the description. Again, politics come before interest just like the existing sites.
I decided to still look. There seems to be no interest-based community. Just random posts likely interesting to an existing group of friends.
It would be fun to stand one up for like gardening, fishing, sewing, or another of my random hobbies. But I’m admittedly lazy and don’t want to own that (both $ and effort managing a community).
I enjoyed niche subreddits until each devolved into feuding, politics, or just repetitive “how do I start” questions killing the signal:noise. The commercialization of Reddit was well after my disinterest.