As someone who doesn't give a damn about other people so I treat everyone (except family and the few friends I have) with the same curtness, here's hoping what

As someone who doesn't give a damn about other people so I treat everyone (except family and the few friends I have) with the same curtness, here's hoping what Linus said here is just an "extra mile" thing (but even that sets a not necessarily good example). I never insult anyone, but I'm also never friendly to anyone, beyond a perfunctory smile when buying something from a cashier for example. I'm similarly short on text. Linus saying that he could be more polite tells me that even that is not "PC" enough and, if so, that's a problem. Nobody is owed any friendliness or niceness, just acknowledgement, and even that only if the other person needs us. In short, I thought he just needed to stop insulting people, but that that aside, there was no problem with his communication, apparently that's not the general consensus. Or I'm hoping I'm reading the situation wrong.