Of all possible responses to the GP, I think yours is the dumbest and least helpful. You've combined two strawmen, a false choice, and the least charitable interpretation of the GP into a single brain-dead one-liner.
The "economy" you speak of is not merely investment income for wealthy people, or whatever other expendable construct you made for yourself. It is our livelihoods. It's how we feed our children, provide shelter, education, security, and hope for the future. A destroyed economy destroys lives, and carries as many or even more risks to our physical and mental health as does the virus itself.
I'm someone who cares about people. The choice is not simply between the elderly and the economy, and we have enough tools and resources such that we don't have to sacrifice any group for any other. But if your strawman + false-choice were our reality, your priorities are fucked up. If, theoretically, you'd be willing to sacrifice the health and wellbeing of the vast majority of the worlds population to whom this virus is no more a threat than a severe seasonal flu, to preserve the few reamining years or months of life for the "elderly" (whatever that means to you), I would honestly feel justified in calling you heartless and irrational.
The current solution is to sacrifice the jobs, opportunities, mental health, education, and futures of the young, where the young is anyone not retired. Why should new graduates lose their offers and join a massively setback economy with 40 mil unemployed, millions of families lose labor income, pupils lose a year of education while forcing their parents into a difficult situation of trying to work while their children are home alone all day, businesses shutter and many shutdown, all compounded with the mental health effects of vast isolation, loss of social events, and outings - because the elderly, relatively rich retiree can't stay home for a few months instead while we make a vaccine and slide checks under their door?
In the same breath: "Yeah let's sacrifice out old for the economy!", you simultaneously encourage the current situation: sacrificing the current and future prospects of the entire rest of the population for no other reason than you believe the old can't quarantine without taking everyone else with them? The economy isn't just some GDP numbers and the DOW - that crap helps the hefty 401(k)s of the retirees anyway, it's people's jobs, savings, ability to afford food, rent, and vacations, and so on.
