The pledge - which wasn’t signed was for 2% - nobody is afraid of Russia at this point and Poland alone could very well handle any Russian army if this war is any indication.
Of what the US spends on NATO, very little goes to smaller nations. In exchange, the US has legal bases and troops deployed in other countries without fear of retaliation, do you grasp how much power the US gets to project through this? Probably not.
US keeps Taiwan because it benefits them, and because it needs the semiconductors.
Nothing is free.
When you lot decided to invade Middle East for oil yet again for the 4th or 5th time, you also triggered article 5 and foreigners died as a consequence of your own greed, your unchecked black ops, and CIA funding terrorists.
Furthermore, this “alliance” means that people are spending money on US military hardware, not anyone else’s, but this is conveniently out of the discussion every time such complaints come up.
Less than 20% of what the US spends on NATO is used to assist smaller countries, and the US only covers 16% of operational costs of NATO - which is as much Germany is covering.
Legal boots on the ground next to any front trumps any and all economic arguments.