I'm about as die-hard excited about 4E as a person can get (even the moniker "fanboi" would be fair), but I don't see your experiences indicating anything about 4E, in either direction, as you've already (and many others) suggested.
I'd like to commend you on not knocking someone out when they pulled out their laptops. Maybe I'm just an extremist, but I grew up getting spanked with a thick leather belt for being that insulting to someone who is doing something for you with good intentions.
I'm not actually suggesting physical violence, but... Wow. Had I been in your situation, it would not have been pretty. This is why I am not a PR guy, because at best I would have said something like, "Actually I don't think 4E is for you, it wasn't written with douchebags as their target player. So take your little douchey sideways hat, and your douchey sunglasses inside, and your douchey popped collar, and your little bluedouche earpiece, and get the F--- out of my house."
Am I being over the top? Heh. Anyway, my commendations on not losing it with your players (who if they are reading should feel like complete A-holes) and being a better person than I am. I get one WoW-esque reference from your story though:
They way they treated you at your table is the way most people in guilds treat the people they don't know. See the Greater Internet F-Wad Theory for more details.