Any commitment is bound to bind behavior within certain boundaries, for at bottom, and when carried into practice, every commitment is somehow moral, and so goes to inform and to constrain acts. Commitments then are per se somehow nomological, at least implicitly: a commitment cannot but impose a moral duty, and a judgement of what constitutes moral crime.
Philosophical liberalism takes the autonomy of the individual as ultimate. Any sort of commitment to anything else is bound to derogate that autonomy. So liberalism cannot but construe commitment to any other thing than individual autonomy as a moral crime.
So liberalism sets itself against all other commitments. It is the envious enemy of every other love. So is it destructive of all things, including eventually itself; for, human selves and their liberties all supervene society, which is a nexus of commitments to things that transcend the self.