The student loan system has always been a graduate tax with a lifetime limit on how much you pay. The only reason it was not set up as a graduate tax is that we were in the EU at the time, so the UK would have been required to provide free tuition to any EU students attending UK universities with no way to tax them if they went back to their native country after graduating.
Those who are in low paid work - their interest accumulation will be greater than the amount they pay off - impacting their finances for their whole working life.
Those who are in low paid work will not pay anything. The threshold for repayment varies depending on which plan the student is on, but the student definitely won't pay anything on a loan for a first degree until they earn at least £25k a year, and may be able to earn up to £32,745 before they pay.
A student loan does not appear on the student's credit record and will be written off eventually. So no, this will not impact the finances of those who are in low paid work. There will, of course, be an impact on the finances of those who earn enough to start paying and, if they don't earn enough to pay off the loan, it will do so for 30 or 40 years (depending on which plan they are on). So, for example, a student on plan 5 (the current plan for students in England) earning £30k will pay £450 a year until the loan is written off.
Borrowing money for the loan to pay for their university education that they can pay off when they starting earning is one thing. tPaying a small amount of interest on top is reasonable. Paying extortionate amounts of interest is not!
For most students, the interest rate is 3.2%. The exception is students who have a postgraduate loan and students on plan 2, where the interest rate can be up to 6.2%. Compared with commercially available unsecured personal loans, this is not extortionate.
I'm not saying the system is without problems, but misinformation doesn't help. When the government raised tuition fees to a maximum of £9k, the expectation was that this would create a market, with different fees being charged by different universities and, indeed, by different courses at the same university. That hasn't happened. Instead, all universities charge the maximum allowed.