This whole conversation is bizarre but where I do agree is the loans system is completely broken.
The student loan isn’t a loan on a commercial basis, think about it. Who is going to lend an 18 year old at least £27k with zero income? Most loans are in the £45k+ region.
Then think about who is taking these loans, it’s low and middle income families. Wealthy families don’t take student loans because they can afford not to. So already the loans system is geared against low and middle income families.
Then consider where most students from low and middle income families end up, news flash, it isn’t Oxbridge or even a Russell Group university where you are significantly more likely to get a very good job at the end further stacking the odds.
Then consider the loan and the interest rate against the earnings profile of someone at the start of their career. You get a graduate job on £25k, priority number 1 for most people is getting into the position of being able to get a mortgage on a house so they don’t end up in a rent trap their whole life. You’ll not really be paying any of that loan off for a few years via the salary tax at which point the ‘debt’ has grown to £10k+ from what you originally borrowed including the 3 years of accrued interest before you even graduate. You are already fighting a loosing battle against the ‘debt’.
These days it takes a couple (on a reasonable, above average but still middle income wage) almost all of their earnings power to get a a fairly average family home (remember this is after loan deductions). At which point there isn’t going to be much money left to start making overpayments to a debt which is still increasing because of the obscene interest rate. Someone who ends up as a middle earner (e.g. a nurse) will end up paying far more over their lifetime because they don’t have the means to pay it off early but also can’t grow their salary quickly enough or are not paying enough to quickly overcome the effect of the compound interest. In the end they end up paying well over the odds for their education. Low earners don’t pay anything at all and wealthy people pay the minimal amount they can.
£50k, £60k, £70k salaries are good salaries and you’ll certainly be comfortable but context is everything, if you need to live in London or the south east to earn it then it really doesn’t go that far these days and doesn’t get you the lifestyle some people make out, particularly once you have kids.
P.S. we could have had a Norway style trillion £ sovereign wealth fund but successive governments have continually sold all of the UKs revenue producing assets over the decades instead of investing and growing them. It’s got to the point now that there is nothing left but the debt generated by our low taxation ideology. But that’s another conversation.