@AcornAutumn,
Let me put this as politely as I can.
From posts I have seen from you on this and other threads, you either lack logic or empathy.
A virus has many routes of infection. So, yes, nosocomial infection is one of them, the one you choose to highlight, but there are many others, including complete idiots making their own (entirely incorrect and self serving) ‘risk assessments’.
The r number at population level is a gauge of how many other people one person infects. The Mathematics is exactly the same as for a nuclear reactor or nuclear bomb (absent immunity). if the r number is lower than one, infection (or fission) slows and stops. If the r number is greater than 1, the infection (or fission) grows exponentially. When this happens, you get uncontrolled infection spread, or a nuclear bomb.
In a reactor, you lower control rods to absorb thermal neutrons and keep the reaction under control. You cannot stop every neutron fissioning every uranium nucleus (that would be essential contacts and hospitals in the analogy) but you can absorb enough to bring the r number below one. We can do that by reducing contacts and wearing masks. It works! The r number is now substantially below 1, as most people do obey rules and we are getting some herd immunity via both vaccinations and herd immunity.
Now, to address the economy/life vs lives argument that you are so fond of.....90% of reputable economists who have done research in this area (I am happy to provide links if you like) have shown that locking down hard and early both saves lives and causes the least damage to the economy.
You need to put your bias to one side and read some real (not just your pet one or two people) research by both epidemiologists and economists.