Trust on the internet is dangerous. You should exercise your judgement and not let it be impaired by a perceived absence of trolls. There are trolls, flamebaiters, astroturfers, bots, vested interests, paid posters and spammers everywhere on the internet. Once upon a time, appeal to authority arguments actually influenced most of the population. Let us not go back there, it is better for us all if we don't trust everything we see and hear.

I'm a very trusting person. I don't lock my doors, for instance. But I exercise, or at least I like to think I exercise, a healthy scepticism without falling into paranoia. You can never really know or understand what everyone else's motivations and intentions are and you should remember that fact at all times.