Yes you ARE correct that the US provides most of the funds for NATO.
However, US based military equipment and weapons system developers-suppliers get most of that money.
If you also consider that NATO countries are "ENCOURAGED" to buy US manufactured military equipment, the statement is at the very least tempered somewhat and ma be totally disingenuous. That is diplomatic speak for BULLSHIT!
If you consider that of the $61B in aid for Ukraine (Bill in Congress) over $37B is supposed to paid to US Weapons system manufactures, the actions by the GOP seem the grossly inept. I wonder where the 3 Senators and several congressmen are in this. They should be screaming in support of their constituent companies.
Regardless NATO cannot rely on the US and any equipment designed and built in the US. This is especially so since Russian leaders, the enemy of NATO, may my become best buddies with the next president.
C123