Not intending to bore on and on about Erasmus because it is somewhat of a niche issue, but having personally benefited from it, I feel need to say that the piece below is embodiment of the bad faith adversarial claptrap that passes for UK 'political debate' these days https://twitter.com/david4wantage/status/1343519132038389761
Its basically trolling with some psuedo-intellectual fig leaves. Do people who did Erasmus from disproportionally affluent backgrounds? Well yes but that's structural problem that runs through whole UK education system including our abysmal record on foreign languages
Can Erasmus be improved and made more appealing/relevant to wider group of people? No doubt. Should we also be more open to exchanges with universities in other parts of the world? Of course. None of these things are impossible under the current system that is ending on 31/12
The author constructs this false narrative of Europe vs the world which runs through much of the Brexit discourse when in many cases (not all to be fair) it isn't a case of either or. We could easily still do Erasmus AND organise more non-EU exchanges as well
Though as @Cardwell_PJ explains in this great thread, its (predictably) not quite as simple of flicking a switch from EU to non-EU https://twitter.com/Cardwell_PJ/status/1342917640797483008