In brutal biological terms, good old red with blood and clawsome Nature, old people are more expendable than young people. That's just a hard fact. So in that respect I suppose one could say the doomsters and gloomsters and Boris Is Evil brigade could, stretching reality a bit, be said to be right.
On a personal level, supposing I and one of my offspring were to contract the disease and there was only treatment for one of us, I would not hesitate to say they should have the treatment. In purely practical and biological terms, not emotional ones, they are definitely less expendable than I am.
But we are living in an advanced civilisation with advanced science and health care at our disposal. This doesn't mean we immediately know how to best deal with a new killer virus. It does mean we will do our best and that our government will do its best. They are not picking ideas out of the sky. They are listening to scientists and following what is advised. There is some disagreement about what is the best approach even among scientists. This is because they don't know everything and it's the cost of a free society that they can speak their minds. A price worth paying in my view.
People who think (or speak as if, even if they don't believe it) anyone who disagrees with them is evil are just silly.
"Made weak by time and fate but strong in will
To strive, to seek, to find, and not to yield."
That ⬆️ is what we're doing.