The great irony is that at some point extra money can deflate prices rather than increase depending on where that money is applied. E.g. build enough solar panel factories in China and eventually everyone gets to flood the market with cheap solar panels. So it is not clear that more cheap money will increase prices for a very long time. The second irony is if the Fed and other central banks hit their goal of increase prices, the wealthy won't feel anything but it will hit the poor and middle classes very, very hard. As in choosing when to eat meals hard.
The thing most analysts miss is there is all of this 'new' money but we still have huge future liability holes. This is both with debt which requires future cashflows to pay off along with future promises which may not be able to be met. This is very apparent in underfunded pension funds. Despite many different metrics pointing to all time highs in US stock market valuations (many ways to cut this pie) we still have big pensions funds that are 50% funded or less (Illinois & Chicago for one.) That is with expected 7%+ returns year after year in to the future. If their future gains are a lot lower its even worse. Pension fund problems are visible, insurance, annuities, etc are opaque. There could be huge problems there still. Banks aren't even that well capitalized still.
We could imagine quantitative easing, money printing, and cheap money as something that could be shoveled in to huge holes of "negative" money. As long as those huge holes exist, the stimulus is not going to perform as expected. If the stimulus is through more debt its plausible these holes are staying the same or getting larger. Certainly it is possible that all of this money has done a great deal already including preventing wide spread bank failures.
My general thesis is we are in a period of time where technology and monetary policy are in direct and absolute conflict with each other. Monetary policy is totally reliant on inflation to pay off future debt and claims. On the other hand, technology is about delivering more at a much cheaper price. We want a market for $1000 iPhones, not $1 billion iPhones. We want software that delivers 1000x more value to a customer, not that costs 1000x more. Fuck, hn wouldn't be here and we would all be living in a bizarre universe if things were the other way around. May be there would be the global market for 10 supercomputers or whatever was once predicted.