>>It seems like there's something seriously wrong with our media ecosystem
I think that is a symptom of the problem not the root cause
>>I don't know if banning these ideas is good/effective
its not, never has been, in fact has been shown to make the idea's spread further and become more extreme as people enter into information echo chambers.
>but we need some way to incentivize the veracity of ideas
Why? in reality the root cause is decades and decades of coddling children and the removal of critical thinking education in favor of memorization education.
The root cause is the failure to teach people how to use critical thinking and logic to assess the validity of data and claims made by people.
The reality is that "Trust the Experts™" is an example of this and really does make the problem worse because people are taught to just trust an authority instead of being able to look at a claim or data set and deiced for themselves if that claim should be accepted. The problem become with the "authority" people trust is wrong, either because they are a charlatan, or just ignorant themselves. However because people have been training to alway trust authority they become locked into this unable to think for themselves.
The more we move to a model of messenger over message, credential over data, the worse this problem will become. The additon of punishments for those that dare to resist "authority" is also going to end badly when that authority is wrong. Keep in mind I have countless examples of authority being wrong I can cite, a big on is that for decades and during my childhood the USDA pushed the food pyramid we now know to be wrong. They were the experts and anyone that dared say "hey maybe all these carbs are bad" were shunned... Vegetable oils are a another where the experts it seems may be been very wrong.
The enlightenment in part was the removal of charismatic messengers in favor of data driven objective truth. It did not matter who the person was it matter what they were saying and if they could prove their claim. All individuals were the same. We have lost that in favor of personality, credentials and authority over data, and proof.
Why is the vaccine safe? "Because the CDC and FDA said so"... that is not a valid response to me. Show me the data, show me the studies, show me the proof... that is the valid response.