You pegged that one. I've probably been a /. reader for 10 years, I've tried playing with Linux for at least 5, and as I noted, Puppy is the only one so far that is generally user friendly (although I still can't get wireless to work on my laptop.). (The machine came with Vista, so I can always grit my teeth and use it if I need wireless).
I've probably been a /. reader for 10 years...
Well, there is that. Although, in all honesty, I don't think /. is very revealing of "average" Linux users. I have been using Debian for two or three years, and used Slackware for three or so before that, and have spent much of that time reading and posting in the usenet groups and mailing lists relevant to those distros. Those groups are composed of what I think would be common or average users of those distros, both of which are seen as less user-friendly than the likes of Ubuntu or the aforementioned Puppy, and I have rarely found any arrogance. As a matter of fact I am constantly amazed at the friendliness and helpfulness of the members of those communities.