...but isn't the reason Linus tends to be blunt due to an experience early in Linux's existence?
Someone came in with a big, grand idea and asked if this is something Linux needed.
Linus replied with something meant to be taken as a polite NAK.
Guy didn't get the subtle hint, and proceeded to go off and spend x months developing feature.
Came back with patches and had the whole thing rejected.
Guy left saying he was so depressed he may commit suicide.
Since then, Linus has been up-front and directly.
Can't remember who, what, where or when