Last year, UK net migration was up a lot (https://www.ons.gov.uk/peoplepopulationandcommunity/populati...) mostly driven by student visas, mostly driven by India and Nigeria. This is a good thing for the UK - a country which already specialises in Education. We make money for each student, companies get the pick of talent, it's good for soft power and gives optionality. It's also morally right that we offer legal ways for people to move to the UK.
Boris is bad yes, but he brought back the two year post graduation visa (under May you had 3 months to find a job - I saw this up close and it simply wasn't enough time for any specialisation). This is also a really good thing.
Commentators below talking about 'going remote' but this is relevant for SWE and some professional services. Roles in labs, R&D, education, media, law are almost always hybrid which means you can't hire overseas.
What's important is that most of these people would have got into the UK anyway on the points-based systems if they spoke a bit of English and worked in an in-demand field. What this policy essentially does is say is that if you went to these Universities then you don't need to be a SWE and you don't need a certain level of English. I can't see how this isn't a good thing.
And by the way, we already do this for people later in their career. https://www.gov.uk/global-talent