While I agree on the inequality, the US does have the highest charitable donations per capita of all countries worldwide by quite a margin [1], which seems to be a good measure of generosity. Although the counterpoint to this might be that said charity is only necessary because of the effects of a kind of systemic selfishness? (I don't know this subject matter very well; more informed perspectives very welcome)
I wonder how much of that, though, is tithing or other support of religious institutions. I'm not sure how to tease these apart, but Creflo Dollar and Opus Dei seem like they should be in a different category from Oxfam and street beggars.
That's all well-and-good meaningless virtue signaling, but it doesn't give millions of homeless people homes, a decent standard of living to people working for poverty wages, those tens of millions people who have dropped out of the workforce (participation rate) good jobs, tens of millions universal healthcare, or the hundred/s of millions savings for a path to ever retire. So don't talk to me about the "generosity" of Americans.
[1] https://en.wikipedia.org/wiki/List_of_countries_by_charitabl...