Why does Paul Waldman think only URBAN young people are interested in the issue of tuition-free college?

I read Paul Waldman’s posts on the Washington Post Plum Line blog regularly and agree with most of what he says, but his claim today that rural young people who can’t afford college aren’t interested in attending college anyway, and those who do attend are fine with borrowing large amounts of money to do so if that is what’s necessary, strikes me as really strange.  It’s surely not accurate.

Bernie Sanders surely is correct that they do care.  A lot.  Which is the direct subject of Waldman’s post.  Waldman says Sanders is wrong.

Why would Waldman think that?  I have no idea.