There are plenty of old school forums. Example: I recently got into leatherworking. There are a couple of subreddits for it but also a large and active forum at
https://leatherworker.net/forum/.
Reddit has discoverability and single sign on for a bunch of forums. It also has some fun nice to haves like a mixed feed of all your interests. But old school forums tend to be less commercial and sometimes can be a lot more tightly knit.
