I don't honestly think its changed as much as you think - other than the debt part.When I took my first degree, tuition was cheap, I lived in room and board homes (for the first 2 years), earned large scholarships and had well paid summer jobs (well paid, but living in not very nice conditions doing heavy physical work). I didn't have very much spending money, but no-one else did either. When I graduated (in 1971), I had no debts, money in the bank and started a high paying job. That was a different time.
Today's young people expect more. Few would consider staying in room and board (if there even is such a thing any more), and renting an apartment or living in residence really runs up their costs. I would not have dreamed of taking an expensive vacation while in university, but that seems fairly routine today. And everyone seems to have lots of spending money.
But there are costs they cannot avoid and opportunities not available to them. They do pay much much higher tuition and don't have the same opportunities to make money during their summer vacations.
A "normal" post secondary education today can lead to back-breaking debt without much opportunity to pay it off later.
I don't think those old times will be coming back any time soon. And I don't think post secondary education should only be for rich kids. So perhaps its time for a different way to fund post secondary education.
My mid 90's experience was same as yours - replace boarding house with dorm or apartment full of other guys. I left with some loans, but also had mostly scholarships so they weren't that much - paid off year 1.
My kids lived in shared dorm / apartments. They didn't have car until one had internship that required it. I did see lots of fancy cars and such on campus, but all my kids friends didn't, nor did they go on fancy spring breaks, or whatever. I still think your perception is the minority, albeit a much larger minority maybe.
I think the older generation give these kids much too hard a time. Were supposed to be mentors, not critics.