I don't think those who want all restrictions removed believe that this would make the virus disappear.
But if they don't believe that, what DO they think will happen?
No, we still won't be able to travel abroad, as whether we have restrictions or not, other countries will and that will drive whether we can travel.
Yes, people will still fall ill.
Yes, this will still cause disruption to public services and all other areas of life.
No, it will not help that people will have to come into all kinds of work because they are 'not very ill', because the huge increase in infections thus caused will mean that enough people are 'very ill' to cause at least the same level of disruption.
Yes, hospitals will still be extraordinarily stretched. Yes, people will still die in large numbers. No, you won't get your treatment any faster, because there will still be no beds and no staff.
No, schools will not miraculously return to a situation where every child has their permanent teacher in front of them, with the rooms fully heated and warm with the windows closed. If your child's teacher is ill, they will be away, and this could be for some time.
No, restaurants and bars will not return miraculously to profitability. there are n measures at present stopping people going out - they just aren't choosing to. Removing all restrictions won't change that.
I suppose you could stop all restrictions AND supress all information (so legislate that no information about deaths or hospitals can be published), to give people a false sense of security. Johnson might go for that, and some people will fall for it....