I think that outside of the education system a lot of the snobbery about 'new' universities is on the way out. After all, 'new' in this context now means 30 years old, which obviously doesn't compare to the ancient universities, but is not that far behind some of the 'plate glass' ones, which I would guess could not be identified as such by most people.
Most of the generation who remembers 'the Poly' in their city will be retired now. In ten years or so virtually no employers will have that memory, and many of them will have come through a 'new' university themselves. I'm not pretending that snobbery will vanish altogether, but it is lessening, I think.
I do agree with whoever it was who said that so-called 'good' degrees are thicker on the ground than they used to be, and that they are not worth what they once were. This is partly because of the fees, which have given rise to a customer/provider dynamic, which puts staff under enormous pressure to award higher grades. A lot of students seem to think that they are buying a degree, and expect to get firsts, never mind upper seconds. If they don't, they blame staff for not teaching them well enough, or the library for not having the book they want when they want it, or a computer for not being working 30 minutes before they were due to hand in an essay.
There is also a lot of pressure on them to get high marks from parents who think that they are paying for their child's education, which, arguably they are not, as the loans are so rarely repaid, and in any case are in the students' names.
This is made worse by the fact that league tables include both the number of 'good' degrees awarded and the satisfaction ratings of students, who in many cases are only going to be satisfied with a first class mark. If courses don't score well on both counts, universities can be ruthless about cutting them.
There is also, of course, the Great Unsaid, which underlies a lot of the discourse around qualifications - the fact that so many more people now have the opportunities that used to be reserved for the few. When only 15% of young people went to university, a degree was a passport to a good job for life. The concept of a 'graduate job' comes from those days. It is in the interests of the people who benefited from that to cling to this privilege and find ways of maintaining their elite status.
Denying that some subjects are worthy of study, and insisting that some institutions are not as good as others* is one way of maintaining differentials that have served them in good stead, as, of course, is the idea that university is 'not for everyone'.
*I have worked in both a 'new' university and a Russell Group one, and have not seen noticeable differences in quality of students or facilities. I realise that this is not a representative sample, but it is lived experience, unlike a lot of comments about the quality of courses that posters have not taken .