As someone familiar with LBT's mailing list rhetoric since the early days, I'm guessing a big part of what's happening here is that LBT hasn't changed the way he communicates but the rest of the world has moved on. And let's face it, the engineering and programming world has gotten a lot more politically correct—I think the main factor driving this is the increasing presence of women in technology. What I mean is tha…
If you look at the tech world of the 80s, 90% of it was very buttoned-up and proper, despite being male-dominated. The rudeness comes from Linux' roots in a youth-dominated hacker subculture. It just doesn't work very well when they aren't teenage hackers anymore, but have gone mainstream and are working at it in a professional capacity.
Corporate/Professional: Symantec, Microsoft
Rude/Hacker: Linux, OpenBSD