Same logic goes to rental business.

I bet no landlord wishes to see their cash flow erodes. But in reality, they do.

Then the claim is they can increase rents to compensate for the devaluation of dollar. Just ask this simple question, can landlord increase rents in the absence of mediocre salary rise?

The other aspect of Buffet's misleading is that currency devaluation rips of savers to pay riches.

A country's prosperity can not built on inflating its currency. Neither it can be built on so called productive assets which is a ponzi scheme on credit expansion, because credit expansion will eventually meet its enemy, credit contraction.