It needs to be underscored that whatever this is, it isn't capitalism. Exactly which -ism it is I know not; but it is a terrible idea.
Central banks interfering in markets can only be to raise prices long-term. They aren't going to interfere to drop prices, the political pressure is unbearable over the medium term. I'l jump to the American Fed because I know a bit more about it - they haven't been able to sustain interest rate rises in my lifetime [0], there is a very clear downtrend.
This sort of activity in turn disables all the signals used to vent incompetent companies from the system. A direct result of these policies by the BoJ will be companies that take in resource, and churn out value that is less than the inputs. It is unsustainable, stupid and destructive. There are no excuses for it.
I lump the US Fed's QE programs into the same basket, but at least they muddy the waters enough that the links aren't obvious to a neutral observer. The Bank of Japan's activities are sick.
[0] https://tradingeconomics.com/united-states/interest-rate