I don't disagree that they agree with the moral righteousness of any policies (or oppositions) in a vacuum, they just deny that vacuum exists, which they are of course right to do. Take universal healthcare or public housing or anything else, their position is typified by saying "it would be great if we could have this, but we can't, because there would be worse moral tradeoffs if we did". The quintessential examples for this are universal healthcare stifling innovation and immiserating hundreds of thousands of workers.

Now are those objections true? No, but they believe them, and that's how they can see their position as being the more moral of the two.