COVID has meant higher taxes.With a 20b a month government deficit, and huge borrowing, I can't see lower taxes, maybe the opposite. In fact we have already seen various tax increases post Brexit.
The theory and the reality are not matching. You're still living in a fantasy. Brexit has meant higher not lower taxes, and with less tax revenue with less exports, some financial jobs going abroad and a smaller economy (as predicted by the government) you can't square the circle. To maintain our national services, with less tax revenue coming in, we have to pay more - not less - tax.
So in short, you are deluded trying to argue that Brexit has not affected inflation, despite increased trade costs and recruitment costs, and by your own account you've seen no Brexit benefit. Instead, you're drawn quoting the latest Brexit fantasy a "sunshine date". Can you see why people might think you're a smidgen deluded?
If we shut down the country when people get a bit ill then it's going to cost a fortune - over £400bn is a number regularly estimated. If you spend everything and produce nothing, you're going to be in a mess.
Obviously spending will have to be reduced in line with reduced taxes - it's just that nobody in the govt has the testicular fortitude to say that, let alone do it. They're all too busy trying to woo lifetime Labour voters in brickhole constituencies up north that they have no hope of attracting.