Even first hand experience isn't trustworthy. Our memory is so deeply flawed that I can't even tell with certainty which first-hand experiences I had. Simply presenting "evidence" that you should remember something can cause your brain to make that memory up. And if the experience is genuine and and I try to remember some detail I didn't pay close attention to, my brain will most likely just make it up. So the only reliable way to learn from personal experience is to learn during the experience, but confirmation bias will make me miss most opportunities to learn.
Honestly, it's amazing that we are capable of learning at all.
Being able to further educate yourself and judge the trustworthiness of sources are direct results of a good primary education.
Many western states have criminally decreased education expanses for decades and the current state of the civilization is in big parts a result of that.
This shit is infectious, too. Many stupid people think their kids don't need a good education, even if there's a chance for them to get one.
Mindless regurgitation of facts doesn't really help anyone - and that's the majority of what I've seen in highschools in America.
For instance some politicians make a bold move that has clear and immediate positive effect. Yet if it has huge indirect and long term consequences that only surface once they are out of office, from your perspective they will get all the credits and none of the blame.
Having different perspectives from “experts” is in my opinion important. The problem is of course to find the right experts, and to have an insight on their limits or their biases, which is usually the beginning of become a kind of expert yourself.
But how do educate yourself though ?
The same argument was already made about books or newspapers: depending of the subject a lot of them are trash. Same for TV news. Wikipedia is also not a defacto trustable source.
Except for first hand experience on a subject, you will never be able to find a source that is inherently trustable (and you might even interpret your experience the wrong way, so you should doubt yourself too...).
To educate yourself, there's a point where you have to try to trust some of the information you get. Having that info come from a trusted source or with a high level of peer review is a useful first level of filtering. From there you can (and surely should) invest in more time to double check or cross check if you want, but IMO quick filtering is necessary, and can't be brushed away saying "people should know better".