Yes. Thinking that you have "politeness capital" that you can "spend down" by being occasionally impolite is very wrong. I've run into people that I refuse to

Yes. Thinking that you have "politeness capital" that you can "spend down" by being occasionally impolite is very wrong. I've run into people that I refuse to work with, ranging from choosing not to do projects with them to trying really, really hard not to ever have contact with them again, by any means. I have probably been a guy that people avoided. It sucked. My advice is that, in the long game of doing stuff with other people, being professional and polite is worth it.