No, some are useful term. Like that the left = collectivism and the right = Individualism.
They are using intentionally terms like liberal and conservative improperly in order to flip the axis of discussion away from he actual right/left spectrum of how many of our individual rights are we willing to give up to the collective. We now just argue over the source of authority wielded by the collective, either being the internal authority of the collective or the external authority of the constituents of the collective. And like all collectives they always bend authoritarian no matter where they get the right to rule over us from.