No. Sorry. The
fact, and I emphasize that word, is the majority of US university students come from better-off backgrounds relative to Americans in general. Sure, they then get absolutely mega-loaded with debt, which is a huge societal problem (and a problem for them), but that's different from their backgrounds, and as a whole are absolutely more isolated from societal problems than the average American whilst they are at university.
For example:
For decades, income has been the lens through which researchers and policymakers examine economic inequities in higher education. However, a new report by the Institute for Higher Education Policy explores an underexamined factor in college access and success: wealth. Breaking the Cycle of...
www.ihep.org
I don't want to get into the politics of this as this isn't the right place for it, but it's just not right to claim college students are some sort of even/egalitarian/meritocratic cross-section of US society (which appears to be your position - I can't see any other position you could be advocating for if you're denying they're typically from better-off backgrounds, unless it was that they were typically from worse-off backgrounds, but that seems unlikely to be your position, especially as it's obviously untrue).
There are obviously also plenty of students who are from less-wealthy backgrounds (like my wife - who is American - who came from a single-parent family, and had zero support from her extended family, even active hostility, to her going to university), but
as a whole, university students in the US represent, for perhaps obvious reasons, the wealthier segment of the population.