I think that's the point. If you look at /r/the_Donald as an example, they believe that all their ideological opponents are paid actors.

This is insidious belief that lets you dismiss different view points as the evil machinations of your favorite villain (Soros and Democrats on one side and Russia on the other).

I think it's much more likely that some people hold different views and express them online. Believing an evil power is hiring people to pretend to disagree with you is probably evidence of unhealthy delusion.

And this isn't?

'The existence of the gamergate/alt-right/etcetera troll army isn't really in dispute. Equally it's well known that actors foreign and domestic have been pushing these viewpoints with actual cash.'