IANAE but this doesn't track, the amount of money people are willing to borrow at a high interest rate is less than what they are willing to borrow at a low interest rate.

Yeah, absolutely true.

A high interest rate with high wealth inequality just means that the wealthy suck wealth from the middle classes by lending out money instead of renting out property.

Either way you're still getting screwed it's just the delivery method that changes.

How are you quantifying this? I've spent most of my life very middle class and I always had to pay rent, but I only rarely had to borrow money.

Rent is a payment to borrow property. Property = Capital.

My parents were similarly middle class. They bought an enormous asset on credit and spent ~4x its purchase value on interest payments. This was pretty normal back when interest rates were high.

Buying a house is usually done with a mortgage which is also borrowing money

Had monetary policy not made borrowing cheap, the wealthy would have lost wealth too. To the point where economic activity would stop completely and we'd be in a great depression.

Monetary policy was necessary. Only lower interest rates for the poor, not for the wealthy or for institutions with assets.