This whole notion of Mastodon being about connecting 1-on-1 with other persons strikes me as a fundamental misunderstanding of how online social networks operate. Mastodon has plenty of trolls and sockpuppet accounts. They run different personas/scripts/playbooks than the ones you'll find on Facebook, YouTube, Twitter, Insta, etc but make no mistake about it: they're here.
Anyone who believes that there's a genuine human person behind every avatar of a cat or a dog is assuming major risk.