@downfield
You could argue that stopping asset prices declining through QE (printing money) is not quite the same as inflating asset prices.
But this is splitting hairs and broadly you are correct and indeed asset prices have risen considerably since 2008 because of QE. But the benefit of rising asset prices was not evenly spread across socio economic groups - wealthier people were able to borrow more cheap money so benefitted more or in simple terms the rich got richer.
@Arbitrage
I fully agree with you that the electorate and politicians seem fixated by Keynesian economics and I am also a much bigger fan of the Austrian School of Economics.
But you are looking at it from a "trader" perspective and need to see this is where politics and economics interact especially since the rise of populist politics. The electorate just want the upside and not the downside or in the words of Rizzle Kicks "I wanna get fit but I don't like running". Any politician that is honest and explains that yes you can have better services but it is going to cost more in taxes or debt just won't get elected.
So faced with the perceived risk of everyone dying from Covid (I agree whipped up by daily death toll announcements, Government messaging and social media) the risks of mass unemployment without furlough payments, the risk of the local pizzeria going bust without £600 m of eat out to help out and the risk. Versus a risk in the two years time of rising inflation, declining real incomes and very real risk for many of "eat or hear". Then the majority of the electorate supported a £450 billion spend on Covid measures and you are right that they are now paying for that decision.
But this is a democracy- the electorate made their choice and we are now living through the consequences much like in many way Brexit.