You're thinking too narrowly. Your point is correct, but the broader point is that there should be those same work opportunities spread out around the country so that you don't have to move to SF or wherever to get a good job. That is what hurts the economy on a broader scale.
Employment is "sticky" in that personal mobility can't move as fast as capital mobility and that seems to have led to concentrations of wealth.
There is nothing in this link about personal attacks. "Be civil" is as close as it gets. "you're thinking too narrowly" is only slightly less civil than "You are literally clueless", which is something people say, face to face (see the bit after being civil?), frequently.
The statement "you are clueless" in response to "you are thinking too narrowly" is hardly the "height of incivility", especially when the comment of thinking narrowly was off base by a long way. The word "civil" is hardly well defined in the first place.
You are wrong, didn't take into account the context, pulled the trigger too quickly, and now won't back off of it. This is the worst type of moderation.
Employment is "sticky" in that personal mobility can't move as fast as capital mobility and that seems to have led to concentrations of wealth.