I know it looks and feels super obvious, but I assure you this is an illusion. On the internet, people are orders of magnitude too quick to leap from "random user with obviously wrong opinion" to "obvious bot/astroturfer/paid shill". It's a crazy bias. We look into this stuff all the time, and 99% of the time it's just that some people disagree with you. More than 99% actually.

Even when we ban an account for trolling, that's almost always someone whose sincere passions about a topic led them to violate the guidelines and not stop when we asked them to stop. That's not astroturfing. People are just very passionate about divisive issues.