Yeah. This is where internet message boards (and some liberals) go hyperbolic, and just lose people.
The U.S. has a real problem. For its wealth, resources, etc., it does a pretty terrible job of taking care of its people with social programs. We could really do a lot better with health care, education, wealth equality, elder care, etc. The resources are there to do it - we just have grossly misguided priorities (and a very inefficient, somewhat corrupt system).
But to suggest that the average American is living a third world life based on income is just so utterly ridiculous as to be laughable. It’s the type of thing that makes people write off leftist ideas. They hear that type of thing, and they just think they’re ridiculous, why even listen to anything else. It has the opposite effect of what is intended (unless what is intended is echo chamber ranting).