Conservatives have been saying something like that at least since Edmund Burke; except they are a little more forthright in that they talk about traditions, customs and values.
Recently, we hear a lot of talk about "norms" on the left. That is a conveniently vague term that could mean anything from longstanding tradition to the current week's fashion in political correctness. In the space of a few years, they have shifted from adulation of a "transformative" president to defenders of "norms" and institutions from our current vulgarian-in-chief. It's positively reactionary.