I think I misrepresented. Most people just ask, "can you come help?" To that I'll answer how long it would take me to get over there if I can, and start heading that way. Few people ask "would you like to help me" do anything. The answers really are different.
That is, you aren't faking it by being nice. You are just not bringing in extra crap to the discussion. Can you do dinner tonight? Yes or no. Not, I'd rather go do something with someone else, but if I have to be social with you, I can.
It is tough, because society is actually highly rewarding on bringing extra crap to the discussion many times. In humor situations, everyone actually enjoys it. And for situations where there is a jerk, society actually rewards it by putting up with it.
Linus has been a tough one. Often the community has relied on his behavior to help keep other jerks in check. People like to talk about how he is abrasive to nvidia, but they really are somewhat abusing the spirit of the crowd, as well. Problem seems to be that it is tough to know when to use a tool in your disposal.