Most unpaid moderators across the entire Internet do so because they have a higher than average interest in the community and want to help keep it running well. You will find some who want to spin a narrative, and some who just want to see a number go up, and some that want to troll their community, and even a small amount who actually are paid shills - but all of these groups put together is but a tiny fraction of all moderators. They’re just usually the most noticeable and so color your perception the most. Squeaky wheel gets the grease, shitty mod gets the public’s attention.