I never told the new comer that he was not welcomed. I mirrored his comment. If my comment is taken as not wanting new players then his is equally taken as not wanting veteran players to remain playing.
I'm really not sure where you're getting that. If no veteran players remained, I wouldn't have gotten my butt handed to me by a Fat Han, and I wouldn't have ever thought about how I would counter something like that in-game. That, in turn, made me a little bit better. I don't use any of the strategies you're bemoaning, I'm stubbornly committed to A-Wings, and will probably not ever get to the point where I'm good enough to go to Worlds. And that's okay. I'll probably never be able to roll a 300 point game, but that doesn't stop me from enjoying hitting the lanes.
My original point was that it can be discouraging seeing someone who's played the game for a while so gleefully predict its downfall because of something he doesn't like in the game. ...But, that I'm going to take it with a grain of salt because the game is more enjoyable to me than the win. The two are nice together, and not mutually exclusive - but I'm enjoying being at the table more than I am worried about the collective expectations of a minority of forum members crashing down in flames.