The talk organizers were faced with a dilemma: either keep Crawford and lose a bunch of other speakers or lose Crawford but keep others
I do think clarification is needed, but I could see "being a jerk " as a legit reason to not want to associate with someone. People do the same with people like Torvalds
Being unliked is also a reason that people won't want to associate with you.
It's hard without specific examples, but brusque or somewhat impolite generally seem common. For example, someone asserts something technical in a strong way, lacking technical insight, or re-animating a zombie topic. The response is often short and somewhat acerbic. To be honest, replying in a sensitive way, with references to past converations, takes a long time.
I would contrast this with jerk as being someone who deliberately disregards the comfort and feelings of others to satisfy themselves: the queue jumper, Steve Jobs, someone who humiliates people on minimum wage, who doesn't re-rack the weights at the gym, who parks in the disabled car park.
I don't. In fact, the opposite: I find overly deferential people difficult to work with. I'd prefer to work with someone that is going to call me an idiot when I do something dumb than someone who will keep their mouth shut and work around me -- Letting me do stupid things without correction is unpleasant. And having people waste time trying to make me feel better or whatever just annoys me. Besides, reading a good insult is just plain fun. Especially if I know the person.
(And no, Linus tends not to flame people he doesn't know.)
I'm pretty sure lack of politeness is one of the defining traits of a jerk, yes.
Which I'm quite aware of because as a lot of programmers I am something of a jerk.
Tolerance and Diversity when it tips the scale toward their agenda, Shaming, Boycotts, Twitter smear campaigns, and threats to employers when it doesn't.
I do not understand how banning people due to some unproved, anonym accusations will result in a more inclusive society. Actually it sounds like a surefire way to achieve the antipode.
In other words, diversity does not extend to diversity of opinion.