i should correct myself for saying it goes "both" ways.
there are more sides than left and right of course.
slippery slope can exist in any combination of an infinite number of dimensions.
Discussion
This reminds me how the right criticized the digital ID when the left was supporting it due to people getting their clot shots but suddenly they changed their tune to supporting a digital ID to pRoTeCt ThE cHiLdReN.
Really goes to show you that both sides are not that different, just have different marketing strategies.