I know OP is not saying this, but I do find the view of some (very often white, middle class) parents and teachers that if a young person does not leave home for university, often thrown into a flat with total strangers in a city they have barely visited before, their social, emotional and metal development is somehow incomplete.
Living at home while in university is a much more usual choice in Europe and Australia (probably elsewhere too) and I certainly do not find that my French nieces or Australian goddaughter have any smaller a world view than my English DD who has moved two hours from home. It has worked well for them financially, academically. They travel in the holidays, keep their local relationships and work jobs locally.
DD2 is looking to study in London and she will absolutely commute in, because it’s almost becoming the norm in London universities and because much of the accommodation is grim, extortionate and not near the university anyway. With the money she has saved, take a year abroad, probably studying in Germany or Scandinavia, which I think will expand her horizons just as much as three years in a flat in, say, Aberdeen.
For some young people, and for some courses, of course moving away is the right thing to do. But for many young people, especially those with neurodivergence, medical or mental health needs, I think living at home can be a really positive choice.