While it’s true that I was speaking from an American perspective on a time period that definitely saw different situations in the US vs Europe, I would also say that the experience you’ve shared shows a similar effect, just in a different environment.
Your father (to his credit) was able to work his way through night school while supporting a family and (presumably) not incurring a mountain of debt.
The notion of working one’s way through college is something that was certainly difficult, but also certainly doable in the time when the boomers were in their 20s and 30s. Many of them still think that it’s possible to work a part time job while you study to pay your way through college and graduate with little to no debt (and use that perspective to pass judgement on anyone who doesn’t do that as lazy).
These days, a part time income may not even be enough to cover books, let alone room and board… forget about tuition. Honestly, it’s so impractical that it’s probably better for a student to not work and focus on study and health rather than try to mitigate debt through a side job.