Right; assuming (falsely of course) that humans have coherent preferences satisfying the VNM axioms, what can be measured in utilons are not "amount of dollars" in the abstract, but "amount of dollars obtained in such-and-such way in such-and-such situation". But I wouldn't call this "not being meaningfully comparable". And there is nothing special about dollars here, any other object, event or experience is subject to the same.
Every time there's an argument that goes like, "Would you pay a penny to avoid scenario X?", which in real life means actually "Would you sacrifice a utilon to avoid scenario X?" and therefore requires us to presuppose that dollars can stand in for utilons, something special is being assumed about dollars.
As per a recent comment this thread is meant to voice contrarian opinions, that is anything this community tends not to agree with. Thus I ask you to post your contrarian views and upvote anything you do not agree with based on personal beliefs. Spam and trolling still needs to be downvoted.