So, on what information are you basing your "simply not true" and "not entirely true either"?

You are backing up your statements of fact with arguments about how it's naively supposed to work, assuming rational actors.

Do you have any actual evidence other than "this is how I want people to behave"? Because the findings of the study seem very plausible to me. And your idea that trolls get discouraged because of downvotes and hiding seems to completely ignore reality.