No, it is a very thick line. Save for a few situations where you might question whether what you said was misconstrued, people for the most part know when they'

No, it is a very thick line. Save for a few situations where you might question whether what you said was misconstrued, people for the most part know when they're being civil or not. "I'm just a straightforward guy", "I tell it like it is", and "I don't want to sugarcoat" are ways people justify being an asshole by acting as if they've got your best interests at heart and genuinely want to help. They damn well know how mean they're being.