I never in a million years would go to r/all because i knew i would never find a new sub to read in all that mess. However, now on monero.house the "all" tab actually has stuff of interest that i would not have seen if i just looked at my subs. My guess is because we are interested tangentially in the same sorts of things. So a person who is interested in monero may also be interested in the darknet, tor, etc even if they dont know about those communities existance