This is absolutely true. The EU is already self-sufficient and can handle most geopolitical questions alone, here in the old continent.I think most Americans are just focused on basic survival. It's the political and economic upper class which push the interventionist agenda. People might be empathetic, but they're also concerned about problems closer to home and feel neglected by their own government. People sleeping in tents on the streets of Los Angeles probably have more immediate concerns than the goings on in Turkey or Sweden or elsewhere in that region. America is slowly slipping into an abyss, and we won't be in much of a position to help the world for much longer.
Europe may have to ultimately fend for itself. They'll have to consider the possibility that there may come a time when America will become too fractious and weakened to be any kind of forceful influence on the world. But I think the nations of Europe have large enough populations and industrial/technological infrastructure to be able to put together a rather formidable fighting force if they wanted to. They don't really need the U.S. for that, and they never really did.
But then, this contradicts Americans' obsession with the Ukrainian war. Because Europeans can handle it alone, and we have decided to promote peace, negotiations, diplomacy.