That'll filter for content that's popular or acceptable to your inner bubble. We already have that and it's becoming a more massive problem every day. "My friends trust it / like it " is not the same as"this is objectively true ". It's a fantasy of hyper democratic good-actor utopia that's not born by reality - whether extreme politics or pseudoscience or racism or intolerance religion or whatever will likely massively out vote any voices trying to determine facts.

Put it other way, today you already have an option to go to sources which are as scientific or objective or factual as possible. Most people choose otherwise.