Earlier quoted context omitted.
This is not a one sided thing. The US has been allowed to do a lot of things under the NATO umbrella that it benefited from (such as: selling a vast quantity of arms). Soft power is a thing and the North Atlantic Treaty Organization came into being to deal with exactly the kind of situation that we are viewing today. To see the US bow out, and in fact threatening allies is duplicitous at best.
NATO came into being to deal with the USSR, which was the preeminent threat to all NATO members. The US wasn't expected just to come save Europe; European states had real military power and the will to bring it to bear against the US's main adversary. In a conflict with the USSR, the US could rely on Europe to fight with them. Very valuable. Today, US policymakers see China as the main adversary. But European states…
As an European: nobody has this expectation, unless you're using some strange subreddit comment as a source of information.