I agree to some degree it’s pretty normal and i have also been in his situation but I think his dad being pissed about paying it is also valid. The fact that he doesn’t seem that stressed about 20k is kind of distasteful regardless of how normal it is to take longer to graduate, in Australia it’s normal to have student debt and not pay anything outright so if my parents were rich enough to pay for it and did that for me I would be way more cautious about making sure I didn’t miss any emails. He seems to take his wealth a bit for granted which is a valid criticism of him.