It does seem that attitudes to the media and experts has changed in recent years. There are people will millions of followers talking about topics in which they are no real training, but then they may claim that they have broken with the orthodoxy. I have actually watched some of the flat Earth stuff and it is laughable.
I think there are various reasons for this. We have some people who control large amounts of the printed and broadcast media who enjoy the power they wield. I do think there are plenty of journalists who are committed to getting facts out and in some countries they risk their lives doing that. We also have politicians who want to control the news agenda. I do wonder if some of the 'conspiracy' influencers are working on behalf of such politicians. Reducing trust in established media works in their favour.
I have recently encountered a couple of people (one on Hive) who have worked in the health field and now preach that COVID was some sort of conspiracy. They may be good at sounding reasonable, but how representative are their views?
The world seems less simple than when I was young and I feel for the youth of today in figuring it out.