Seems like this is ascribing an awful lot of value judgement on personality type. I’ve had very deep conversations with people across the spectrum, and met a lot of introverts who couldn’t, or didn’t want to, talk at more than surface level.
I'm not sure what you mean by a value judgement. But these things are obviously personal, broad, statistical, and not absolute. Personality types are a thing though, and some types are more prone to certain behaviors and feelings than others. Doesn't mean it's always that way or better or worse.
Probably what's being re-hit upon is that there's more to personality types than introvert and extrovert.
It’s the notion that “extroverts” aren’t capable of holding deep, intellectual conversations or that “introverts” are more prone to them. I accept that may not have been your intent, but it’s how I read that comment.
To be fair, I said "not willing" and not "not capable". There was probably a hint of bias coming from an introvert and personality type that doesn't generally feel heard.
But I think the more broad and modern personality models beyond introvert/extrovert are better for this rather than the broad strokes I painted with.