OK... but... isn't that what everyone is being advised to do right now? So maybe not a great example of something unrealistic to ask? Since in fact the UK would be asking it of fewer people than... many are saying it needs to be asked of -- although the US government isn't actually telling us to... yet? But that's the alternative those who who think the UK's plan is madness are suggesting, right? Asking everyone to withdraw from society for months?
I can see the desire: Wait, could we just ask high-risk people to withdraw themselves from society for months, instead of asking everyone to do that? Cause that'd be a lot less disruptive to our social and mental health maybe it'd be just as good? (There are real costs to mental health and social functioning of asking everyone to avoid all contact with everyone else; it might be the best option anyway, but it's definitely not without it's own health risks and consequences).
But I'm no expert. It kind of sounds like the experts are saying "not really, that isn't a good idea, everyone has got to do it". Sometimes what we are called upon to do is not easy or pleasant.
One of the frustrating and anxiety-producing things here is that we aren't getting very consistent messaging from the governmental authorities and experts. It seems like really a failure of the kind of consistent and pervasive public health educational messaging that would actually maximize compliance. Instead it's "everyone picks what forwarded chain letter on facebook makes sense to them" and we all know how well that works...