I think you’d be surprised how many people here share your interests. You may not be able to scroll through an album of other people’s projects relevant to your hobby right now, but I bet you can post to a more general community with a very specific question (or show off your own project) and get a good amount of engagement and feedback, maybe even with broader perspective than you might get in a subreddit with an established “meta” for your hobby.
This is a primary source, baby! That’s gonna be gold in 120 years!