My wife is a nurse and I'm very much aware of the fatalities among medical professionals. Doctors and nurses treating infected patients are being repeatedly exposed to the virus and must have viral loads far higher than ordinary people in the community.
Yes, you are right about undiagnosed people. I'm not suggesting the course of action I described is perfect, but the models I have seen that inform the current policy do not reduce the overall incidence of infection over the long term, but seek to stagger it. I don't see how this will prevent people with underlying conditions from becoming infected.
Maybe leave the passive aggressive barbs to the experts? I'm not in a position to make any decisions here, just talking bollocks on an Internet forum, same as you.