You are hugely underestimating how sick most people who are in hospital with Covid are if you think that people without nursing qualifications, however well trained can look after them. Yes they can manage their basic nursing needs, and be trained to spot significant signs of a deteriorating condition, but they are not a substitute for qualified staff, and certainly could not staff nightingale hospitals without a very significant level of qualified support form doctors nurses, and very
Importantly also, physiotherapists.
Unless you are suggesting a nursing home type environment - in which case people could be discharged into nursing homes surely, as sadly there are plenty of vacancies at the moment, although not enough staff. It’s very easy to come up with solutions when you have no knowledge, or when, as the Government is doing, you are trying to reassure people that there isn’t really a problem that is is danger of running out of control - which is the reality.