No not at all! And politically they can't really leave. There were some attempts at successipn a number of years back that the US squashed politically. Each one of the territories has military implications and serve as forward bases, (Even the Marshall Islands). Too totally cede from the US would involve an armed conflict, Grenada isn't a great example, but when Marxists kidnapped those US medical students, we asserted our national interest. We provide so much financial control over them that to sever ties would put their welfare states into instant bankruptcy.
What this meme is really about is that Schumer is threatening to make Puerto Rico and DC states to add 4 solidly democrat senators to Congress in perpetuity so Republicans never have a hope of advancing conservative ideals. He could even try to add the other territories and we would never see another republican of any significance. Conservatives have long been attacked as imperialists, colonialists (racist, bigot, homophobe, xenophobe, phobe phobe, ad naseum), so I'm throwing the same accusations back at them since Schumer is a visible target right now. Hypocrisy is always ripe for ridicule.