That's a misunderstanding of the slippery slope logical fallacy. The slippery slope fallacy is when someone says that the causal chain A to B to C will necessa

That's a misunderstanding of the slippery slope logical fallacy. The slippery slope fallacy is when someone says that the causal chain A to B to C will necessarily play out. It's not a fallacy if they're arguing instead for its plausibility. The fallacy also doesn't assert that slippery slopes don't exist and never play out in reality. So it's false to say that the slippery slope as a concept is itself a fallacy. That doesn't follow from the slippery slope logical fallacy as it's formally defined.