Those are your words not mine. It wouldn't happen overnight, but it wouldn't be recognizable within a year or less.

They would remove almost all content to avoid liability, absolutely. 230 shields them from liability for the content they host (for the most part). It would turn into nothing but network shows and commercials, just like TV was 10-20 years ago.

Here's what EFF describes it, and they support keeping it.

https://www.eff.org/issues/cda230

Removing 230 would absolutely be an affront to citizens free speech and freedom to broadcast. I understand why people don't like it, but the alternative (removing it) is much, much worse.

Think of it this way, say you hosted a blog on your own server and you had comments. Now once 230 gets repealed, you are open to lawsuits from anyone concerning any of the comments on your blog, including lawsuits with no merit that you still have to defend. Would you keep comments open? Probably not and even if you did, you probably wouldn't for long for one reason or the other (probably because you were sued).

Hell, HN probably wouldn't even be the same. As soon as someone says x company sucks in a comment, HN is now open to a libel lawsuit, meritless or not. HN would have to decide if hiring full time moderators and a legal team for content would be worth the effort to keep the site up. It might be, but for many, if not most sites, it's not.