It's mostly just that we are worried that anyone seeking to regulate the platforms is mostly just seeking to control said platforms and get them to spread their version of the truth. Something we already see with CNN, NBC, Fox News, etc.
Yes. Don't regulate the platforms, the platforms aren't the problem. Go after the actual sources spreading misinformation - many of which will likely be connected to the very same government you want to act as cop and censor - and support better critical thinking in education. Rather than making it illegal for platforms to moderate content, refuse to use platforms that don't.