I think Scott Alexander’s piece on slippery slopes and Schelling fences [1] does a nice job delineating between good- and bad-faith slippery slope arguments.

“Slippery slopes legitimately exist wherever a policy not only affects the world directly, but affects people's willingness or ability to oppose future policies.”

[1] https://www.lesswrong.com/posts/Kbm6QnJv9dgWsPHQP/schelling-...