Oh I’ve been to New York and the Wash DC Smithsonian, likely the two best public transit systems in the USA. BART in San Fran also is fine but could be better.
But I’ve also gone to Madrid, Tokyo and some other cities around the world. There’s no comparison. Best in the USA is closer to average of Europe, while average of USA is pretty bad public transit wise.
Ex: I’ve also gone to big cities like Nashville, Manilla Philippines, Los Angeles where things are closer to bus-only and the local traffic suffers greatly as a result. The general expectation in the USA is that ‘public transit is for the underclass’. In contrast, you do see rich people take Wash DC metro, NYC, and especially Tokyo’s subway. And it makes a difference when both rich and poor take the same system.