I'm not sure what you want for evidence here: those two topics are common themes across a range of medical failures, across a range of areas, when you look at say, reports on why vaccination or mental health education programs fail.

That:

1. People don't trust doctors, partly due to how doctors act.

2. Doctors don't do a good job sharing medical knowledge.

I'm open to bets by anyone who wants to bet that either doctors are widely trusted by their patients or that they do a good job sharing medical knowledge, and am open to hearing ways to scientifically measure either.

But if you're not willing to bet against those two claims, then you probably agree with my conclusion -- that those two real problems are causing upset that's being (irrationally) channeled into things like anti-vaxxer movements.

Edit:

I can't find great quantified surveys, but this is a concern doctors have too --

https://www.physiciansweekly.com/doctors-losing-publics-trus...

https://www.forbes.com/sites/peterubel/2014/12/19/why-dont-a...

https://www.hopkinsmedicine.org/news/media/releases/Trust_Be...

https://www.huffingtonpost.com/dr-peter-rost/dont-trust-your...

http://mhealthwatch.com/more-than-half-of-all-americans-dont...

That explains why people wouldn't trust MDs in the US where a medical license practically comes with a half million dollar loan that hangs over the doctor's head for decades and they're doing things that are bad for patients like the opiate crisis. But what about other developed countries? Do they have similar trust issues? Why do these Western Europe countries have antivac problems?