The people OP are talking about see direct communication and clarity as abrasive. It is absolutely extroversion vs introversion.

I have worked with plenty of people who all react differently to the same interactions and have the opposite takeaways on whether someone was polite or abrasive. Like one guy I worked with always gave clear answers to things that were asked clearly, but when someone was indirect and wanted the person to infer something any follow up questions (asked directly and without any real emotion) was seen as them refusing to ‘just get it’. That is what these managers sound like. Extroverts who don’t understand that introverts aren’t asshokes for not playing the small talk routine and pretending to be happy about everything.