Conversation

Consider the site https://www.doesthedogdie.com/ - it's a single-purpose site that lets you know something important about a movie. Most people don't use it to completely avoid movies - just to mentally prepare themselves so they're not as shocked and emotional when it happens.

Think of CWs the same way. It's not that you can't discuss politics, it's letting people know a conversation is about politics so they can be prepared.