Problem is, that it sets a precedent, and next they will come for other websites whose ban will strike you as "bad".
Edit: I can definitely see them banning anything related to Linux and resources related to OSes because of how processes can be handled, e.g. "kill parent", "kill child", and so on. The term "kill" already has to be censored out on many websites. Of course context matters, but people really have difficulties with this these days.
Within this context, how? I do not think it can be used to argue against laws in general. Plus we have a lot of experiences now about it setting a precedent and them coming for your beloved websites. It is not even debatable today.
Yeah, so should we have something like Chat Control and more, similar regulation(s)? It really is not so far off from banning platforms. I remember when people were trash-talking China for doing this, and now "we" are doing the same thing we initially opposed. I suppose people may only start opposing it when it starts to affect them.
I am also wary of things like government owned encryption backdoors and ChatControl, mostly because I feel like like society should be resilient to authoritarian takeovers (and they always seem to happen much faster than we would expect, we'll see if see the US gets another fair election in 2028)
I am just not swayed by the slippery slope argument because as someone else said, it can be used for anything.
Do we actually have a disagreement? I genuinely have no idea.
I do not care about Twitch and I consider Facebook outright harmful, but I do not think they should be banned. I have not fully read the article, but I bet it is "think of the children", a really old justification for "I want more control", a classic power grab.
I think there is such thing as a moat on legislative and cultural movement, whether that moat is good or not. So rather than "slippery slope" I think of it more like reducing or building moats.
Edit: I can definitely see them banning anything related to Linux and resources related to OSes because of how processes can be handled, e.g. "kill parent", "kill child", and so on. The term "kill" already has to be censored out on many websites. Of course context matters, but people really have difficulties with this these days.