I said "hard to find" not "impossible to find". Start with being in the subreddit or relevant other high-traffic high-SEO community for the subject, and see what other places the good members are discussing (often a discord, IRC channel, Slack, forum or similar). Recurse a few times, and each time you do you'll get a higher signal-to-noise ratio, higher expertise, lower abuse/garbage behavior, etc

If you just link random people directly, you'll inevitably get some folks that can't read the atmosphere and just generally walk all over the flowerbeds without realizing what they're doing. AKA they need to "lurk moar"