I've not read the whole thread, but there seems to be an inherent assumption (at least in the press) that everyone deserves to get good grades and it isn't fair if you don't. If grades are better than predicted then hey that's fantastic but no one is going to moan about that.
Sounds to me like everyone who didn't get to where they wanted to go has a free lunch to have a bloody good moan because it isn't fair. There is no suggestion at all that any of these students actually didn't do as well as they wanted to and therefore don't deserve to go to their 1st choice uni. Three years ago my daughter's English A Level paper was mismarked (her grade went from C to A* on appeal) and it nearly screwed up her university education - now that's not fair.
What I do know is that its a damn sight easier to get into university now than it was when I was doing my A Levels in the mid 80s.
That seems to misunderstand the problem. It's not a case of 'I did this exam and didn't get the mark I wanted so I'm gonna use this covid as an excuse to claim I've been marked unfairly;. It's a case of 'I didn't get to take an exam and some computer has decided I would have failed because x% of students failed this exam last year'.
People aren't complaining because they took the assessment and the mark they got for the assessment isn't what they felt they deserved for it based on their own opinion of their own work. It's that every metric, all the essays and homework done over the first year and a half of their course all indicate they are on course for a particular mark, but that is not the mark they have been awarded. Someone, somewhere, somehow has decided that this student who is tracking for A will be a student that would have fallen short had they taken the exam, so awarded them a B instead. And the only reason that seems to have been given is that last year more people got Bs than As, so we have to give so many Bs.
It is entirely possible that some of those being marked down, would have fallen short. But that would have been a mark based on their actual work, not on the spread of results from the previous year's class.