Look I'm not arguing with you this is reality. Your position is clearly one of "boo hoo America" which is very not unique and your attempt to make people defend the US is silly.
Being asked by multiple countries for the last century to show up and help restore order, relied upon to ensure people have a degree of safety, food and water while providing means to fight some of the worst illnesses affecting the world is absolutely being looked to as a "global police force"
When Pol Pot was committing a genocide people asked why US didn't continue to fight it, as the Rwandan genocide was happening America was expected to be doing something about it, when the Syrian civil war broke out and chemical weapons were used people asked why the US didn't act, as Ukraine and Palestine are being genocided people literally curse America for not doing more. It is a constant expectation to act because the US has the means to act. You're gonna tell me all the reasons X, Y and Z why it is their fault or something but if they did act you'd consider it them dredging up more soft power. So which is it?
On the same line why hasn't China stopped the Palestinian genocide? Why didn't China stop funding Pol Pot's genocide? Why didn't China stop selling weapons that contributed to the Rwandan genocide? Why doesn't China stop funding Russia's invasion of Ukraine? Why doesn't China stop their predatory loans to Sri Lanka and Zambia which is causing an economic collapse? The Democratic Republic of Congo has 7 million people displaced because of fighting over minerals like cobalt that China buys, they're literally funding that violence too. I guess China is allowed to engage in growing soft power at the cost of blood because of whatever dumb reason? You're not running around in these comments crying about any of that.
Your views and expectations of these countries are different, and you don't understand your own perspective in that.
The argument isn't did the US benefit. It's not "what was their motive". The fact is other countries relied upon the US and asked for aid often. Literally just the truth, spin it however you like to fit your world view that's fine but your position is transparent and very ignorant trying to frame everything as black and white because you have a single legume rolling around your skull in place of a brain.
The US can both be the reason why smallpox, polo and the guinea worm aren't tearing through society and also have a history of terrible imperialist actions. The US is completely capable of dispensing aid and protection while also using that as a political resource. The world isn't full of infinite resources, you scratch my back and I'll scratch yours is probably the oldest human understanding.
Both China and the US and every other country operates exactly how I'd expect them to. So go on with your buts and denials, they're silly. It's "I got my opinion on Reddit and lack any complex thinking America bad!"