Caliban64Pick any pop culture topic for instance. Anything. A TV show like #whitelotus for instance. Search that hashtag on #mastodon and you get a handful of random posts with a handful of responses. On Reddit you get multiple pages of posts and hundreds of responses.
DopeGhoti@Caliban64 Ah but you might see a clustering of those posts on certain instances, and you can then repeat the search on those instance and find scores of people to follow back on your home instance.