Well, that is the problem with fractional reserve lending.

There isn't enough money to pay for all the loans and interest.
So, there will always be defaults.

Its baked into the cake. It was the design from the beginning.
And just as compound interest makes your investment grow, compound interest slowly eats away society, and then quickly gobbles up the rest of it.

It isn't that the middle class suddenly became poorer. This was a planned attack. And the leaders of the central banks should be rounded up and put in front of a firing squad. Because, either they are implicit in this destruction, or they are too stupid to live.