Agreed, I just think this is relatively likely to be one of the exceptions, or at least to be genuinely well-intended. Partly because it's not so likely to seem like damning with faint praise, and partly because the stereotype itself is less deeply offensive than e.g. racism.

(Especially if the trait in question is something like sociability, rather than social skills. If someone says they find me less introverted than they expected based on my profession, it's hard to take much offense at that. I think calling someone 'very social' is a bit ambiguous, but I lean toward interpreting it this way.)