That's interesting. I've never heard anyone claim above 30%. Though I've read the enrolment rate is in the 60% range, which could make your loan part true (within some margin of error).

Canada, considered the most educated nation, has, if I recall correctly, 64% of the population with some post-secondary achievement. But note that includes university, community college, trades, etc.

I'm not saying media reports claim those numbers, but, at least in the media I read/watch, the student loan debt problem is presented as something affect a large majority of young people. Really, it's affecting a large majority of young college-going students (which is probably self-evident) but it's generally not clarified as such.