I honestly feel about the same. (which is why I post so little, although I read a lot of posts here--I feel like I have nothing to contribute even though I'm crazy about the game) That said, it's really not abnormal for "pro" players to be inhabiting forums like this, so I wouldn't take it to heart. Even in games I'd consider extremely casual like Super Smash Bros, there are always people who take it a step beyond on the net, and might not realize they are coming off as elitists when they disregard the thoughts of newer players vocally. Playing the game IRL has been, for me, a far more casual experience.
I'm not really sure what you're saying. Maybe that you don't want advice on how to play better?
If this wasn't a joke, it's exactly the kind of post the OP is talking about. If someone said that to me in real life I'd kick him in the balls. He said in the post he was interested in reading about strategy; what he doesn't like is the dismissive attitude of the 'experts.' Dominion is not an exclusive club, bro.