Freedom of speech should absolutely be protected. But censorship is not really the problem. Today, more people have more outlets to speak and express themselves than at any time in history.
The problem today is that institutions of trust are being eroded. Every individual cannot be expected to become an expert on every single issue, they need to delegate that research to institutions they trust, and then trust that institutions recommendations.
The problem today, is that trust is lacking these institutions (whether that's government, academic, religious, etc.). Without proper authorities of trust, there is a power vacuum that charlatans are eager to take.