People will make frequent mistakes if you put the privacy decision at a per post level. (And not just average users: see stevey's Google Platforms rant)
Having different apps, chats (Discord servers), accounts (at-a-push) for each privacy circle is much clearer to average users. Migrating a whole group of any size to another platform is hard, hence many of us are stuck with Facebookk in case we get invited to something we don't want to miss on it, but new platforms will continue to emerge and some will succeed.
There's an interview with the CEO where he explains (claims) the idea of that policy is to reduce demand so they can leave out a couple of toilets and put in / sell more seats -- it's not about the charge for the toilet per se.
On student evaluations, I wouldn't be surprised of Oxbridge do badly as so many pf the dons were at or near the top of their year at the university, weren't employed for their teaching abilities, and seemed unable to comprehend they were not teaching cohorts entirely full of clones of themselves.
Dumbed down it was not, in my experience. Dumbing down would be a way to up the score on these rankings, though.
Contextual offers are just that -- contextual. Cite your sources if you're claiming all independent schools get one tariff and all state schools get another, because AFAIK that's not how these contextual offers work.
Oxford admissions have a heavy interview component: if they think you're really smart, have great potential, and then you'll be of the caliber to get 4 A* no question if you had rich parents and went to a top Public School (but don't, so may not), then -- yeah -- they can make you a lower offer. Their place, their rules.
It isn't dumbing down or taking worse students, it's easing out the rich types who will drink/play lacrosse or rugby/bore to at least Blues standard, are pretty bright but have been spoon-fed to get there so will turn out to be dumber and worse students that people whose potential hadn't been fully revealed by 17/18, even if the spoon-fed cohort get better A Level results.
Artists don't reap the profits of the current system -- they get the face value -- Tickmaster and the scalpers do.
My solution would be some kind of auction where people put in bids of what they're willing to pay for different seating types and allocation happens so same-type seats are either sold at their reserve price or sold out at the lowest price they'd sell out at exactly, while maximising revenue -- that would give the revenues to the artists, avoid queues and disincentive scalpers. Legislating for no resale above list price and fair fees would disincentivise TM supporting scalping. TM etc could always negotiate a cut of selling-price-above-reserve to encourage them to do the best for the artist from however the auction works.