Pleasant ≠ profanity free. I identify fully with Linus' stance of profanity bursts followed by no-grudges held. A common professional profanity free, revenge backstabbing, work environment is much much more unpleasant.
This may be a guy thing, and a clash in behaviour of the sexes. Guys are more prone to bursts of aggressiveness, gals more adept of moderate long term aggressive stances. Which one is more difficult to handle is largely a matter of opinion. Quick bursts are automatically solved immediately, leaving bruised egos, long term allows more time to manage the underlying reason. Just because Linus' stance is flashy does not make it wrong.
Unless you posit that aggression is never warranted. Then, we'll have to disagree. Aggression is a normal behaviour, artificial suppression leads to non healthy alternatives; it's better to lay problems out in the open and fix them than to sweep them under the politically correct rug.
I'm sure there's no perfect dividing line between non-aggressive/aggressive. But it's generally clear when something is nearer the extremes.
"Alice, that's completely wrong because X, this code needs to be rewritten from scratch following principle Y." "Bob, what is this retarded shit? You stupid fool, go RTFM and do it again."