I think it depends where the uni is whether they are prepared to run online classes.
Ours is still face to face for approx 50% of the programmes, building up to that over a few weeks to see how it goes.
I don't know what people want- would they honestly have preferred to keep their children at home and commute up once a week? If so, your child can probably get out of halls if you speak with the housing officer, at least for second term. However, many young people, as I said in my last post, would actually rather be away and trying out their wings rather than sitting in with their parents. I don't think parents really want to accept that...of course there's a place for parental support, and of course there are going to be a handful as there are every year who simply can't cope with uni, and in those cases, picking them up, going home and regrouping is the way forward. In general, though, in many places without lockdown are reasonably ok for students- they get to go onto campus some days, meet people in halls, try out their independence.
They will go home before Christmas anyway, because teaching stops early in Dec and the gov't has no mechanism for stopping that movement (legally I think) unless they ban everyone from moving from place to place (which might happen). It will have happened before they tell everyone they can't do it!
Sometimes what parents want and what young people want are two different things. On Mumsnet, not taking your GCSEs this year was a tragedy, everyone's children were devastated and upset. In real life, my dd was absolutely delighted she didn't have to sit her horrible GCSEs and considered herself lucky! For those that did badly- they can sit them again.
If a course is entirely online, then I can see the rationale for wanting that child back immediately- but remember, some might want to stay away and live in these rather strange circumstances as it's more exciting and interesting than sitting up in their bedroom at mum and dads. Some unis are doing good stuff to help the freshers, ours is, and we are also having face to face student union stuff, with limited numbers.
Also, remember that like schools, the risk of covid is borne primarily by the staff, so lecturers and admin staff, many of whom are over 50 or have pre-existing conditions or are BAME. So, whilst it might feel safe and fine for your young person to attend- we can't actually have all those higher risk staff on campus, so we cannot offer the same face to face experience, full stop. That's what should have happened in schools, and it will be the staff falling ill, not being able to get covid tests, becoming over-stressed, resigning, isolating that stops the whole school show, not the young people.