There’s nothing to disagree with
The problem tolerating intolerance is it only works if the intolerants, in turn, also let you express yourself after they gain power, which they won’t, because they are intolerant. You need to be lucky every time and they only need to be lucky once. And the only thing preventing the disaster is that there isn’t an infinite amount of time ahead of you
The slippery slope fallacy is when you don’t detail what would make the slope even slippery in the first place