My experience says hobby subs on Reddit are amazing though, and plenty of 30 or older generation. Used to visit leathercraft and bicycling sub daily, until real life forced me to forgo both hobbies.
Agreed. The more niche/focussed the hobby, the happier the subreddit atmosphere. I love /r/bikecommuting too, and also /r/ergomechkeyboards, /r/formula1, /r/financialindependence etc.