Liberals start from a position where America’s heritage, Christian heritage, tradition, legal precedent, natural law and common sense are all against them.
Thus while they hope to win, they don’t really expect to win any single battle. There strategy is more of death by a thousand cuts.
The five Justices, which now included Roberts, are not liberal but they are now and have been activists judges. That is one hell of a difference and they have a disrespect for the limitations of the Constitution.
It’s very hard to violate your principles when you don’t have any.
There are no complaints because the “liberal” justices are always working for The Cause, 24/7. They take the long view.
The Right has been on the defense since 1964, so a few “victories” are irrelevant in the long term, from their viewpoint.