Phony talk there. The argument you reference is based on a variety of assumptions about the value (or is it “value”) the UK receives from tasks performed by the monarchs.
And please note that there is not inheritance tax due on the Queen’s estate. It passes intact to Charles; supposedly this is “worth it” since the monarchs (Elizabeth II and now, Charles) pay income tax.
But you go right on defending the welfare state over in the UK.
You began with an insult - therefore this ends now.
No need to be nasty
You can dislike the monarchy all you want. Elizabeth was a remarkable woman She will be missed ….even if not by you