Tiger Moth - you're quite right in that this media (internet) allows some people to be incredibly rude, disparaging & potentially off putting to relatively inexperienced people. 'course, they can do it from the anonymity & safety of their little virtual caves...
But my advice is just chill out, dont get worried, they get at me too sometimes, and I've been flying for a long while now. I think it may be to do with the fact that aviation is an individualist past-time, and therefore attracts a lot of "individuals" (logically enough!). Egos need massaging, superiority needs to be established, etc etc....
Luckily I can assure you (and you probably know anyway) that there are also a lot of great people in aviation, who are only too pleased to listen, discuss, and yes, correct innacuracies, but in a non-combative way.
Just think of the negative ones as the equivalent of the irritating BMW 6 feet off your back bumper on a country road, itching to get past, shove his finger up at you and show you how smart, fast & clever he is. Without his car he's probably a vulnerable wreck.
They are the ones with the problems, not you!