What they would want is consistency. Or as you said, liberal double standard. I don't want his input on anything, you see. But Trump does decide to give input on select things. Things his base cares for (10s of thousands of Muslims celebrating fall of twin towers in NJ). Bowling green Massacre. He keeps oddly quite on things his base would find unpleasant or things that make him look like s..t.
I have no problem with him doing whatever. I never said he should. Muslims are not "liberal" so I am not sure where liberal demand comes from. I am merely pointing why he does what he does because someone was pointing out that Trump was being consistent in his actions or some such thing.