For me, this is one of the problems with 4E. The way people view it, it's like because we get cool things like DDI and power cards etc that, that is all the game is.
I haven't come across any attitudes like this but I think it's not in the spirit of the game. Although it's a blessing in disguise, you have stumbled upon a jerk filter. I wish I had a gaming jerk filter.
Personally, errata is a non-issue. If I come across something I don't like for various reasons I'll change it there and then. I don't need a DDI account to tell me what to do. I hope you find similar DM's for your sake.