Many economists were not all saying this, plenty were saying other things.
The problem is, massive inflation is very GOOD for the Elite, the faster money moves, the faster they get their cuts, and it flows up quickly.
They HATE slow economies, and low inflation, because they cannot grow their wealth as fast.
In fact, the only reason inflation has been as LOW as it has been, is because the economies are so engineered to take money to their hands quickly, that much of it is drained out before having much effect.
They have used their power to 'educate' us that inflation, fast economies, is good for the middle/low where most people exist.
Hence, people plead and dream of lower interest rates, more government spending, and higher 'healthy' inflation - because they have been brainwashed into wanting this even though it is destroying the middle class. They are rewarded with leasehold fancy cars, bigscreen TVs, and $1000+ smartphones, while they lose their actual assets of value, and sink deeper into debt to fund the wealth of the elite.
However, it is not, it is good for them, the people at the top, who are now wealthy on a scale NEVER seen before, not even in empires and kingdoms of the past.
The biggest problem now, is that the elites are using both communism (where the unwashed should own nothing) and capitalism (where the elites should we 'rewarded' financially) to try and create a system where the vast majority SHOULD own nothing and therefore be 'equal', while our betters own everything, for our own good, because they are 'better'.
History has shown us time and again that this will fail, and the tower will collapse as the middle classes give up and stop being productive, because there is no reward.. But the collapse is never pretty, or painless.
None of this is new or unexpected, all of it has been clear for some time, however people have blinded themselves to it.