Sadly it's because a lot of us have lost faith in people in general over the past 5/6 years. Initially when the internet came along we though "great, now we can share ideas and knowledge with total freedom and not worry about governments or the media". Without realizing what that freedom allowed for abject the checks and balances that were traditionally applied (editorial/peer review etc) and the sheer amount of exposure this gave to bad actors.

The past 5 years have shown us that as a society we have lost our common basis in fact (alternative facts, fake news etc.) and the whole thing worries me. It worries me even more that i can't see a way out of it other than censorship. Short of a massive change in education to focus on critical thinking and evaluating received information, but that takes years and the problems we have now are destroying western democracy.