It isn't easy for a 4-year degree. To get to that level generally requires law school or medical school debt or an unfunded graduate degree.
For 4-year degrees around 80% of students graduate with less than $30k in debt.
For public schools only 7% of graduates have debt above $50k. For private nonprofit schools 12% have debt above $50k. For private for-profit schools it is 32%.
That does include estimates for housing, food, books, etc so there's wiggle room especially if you have family near by and live at home.
For anyone going to school entirely on loans though, you wouldn't make it a year with only $30k in debt.
To me its less interesting to look at what the average person who is able to afford college today borrows to pay for it. That's a self-selected population and doesn't show what the impact would be on anyone who gets into college but doesn't have family money, scholarships, or grants to help pay for it.
Its pretty easy to go to college on loans and rack up $150k in debt for an average 4-year degree. Its easy to spend $35k-$50k on a new car, even 10 year old cars in good shape are $10k-$15k. Housing costs vary a lot more by area, but I think most would agree its extremely expensive these days.
The idea that a young family could have $5,000/mo just in debt payments between school, vehicles, and housing is insane to me. That doesn't even account for day to day expenses, children, vacations, etc.