Again, your OP was tied specifically to the US interpretation. But even if we leave that aside, a loss of YouTube, Twitter, Facebook, Reddit is not a threat to

Again, your OP was tied specifically to the US interpretation. But even if we leave that aside, a loss of YouTube, Twitter, Facebook, Reddit is not a threat to discussion. You seem to imply that before these existed, there wasn't any actual discussion of important topics. Sure, social media has enabled massive amounts of screeching and foaming at the mouth, but beyond that, the impact on useful debate is more than doubtful. Unless you prefer populism over democracy, in which case it's an incredibly useful tool.