Imagine you're on a plane in some random guy stands up and says hey listen everyone. I watched a couple YouTube videos and I think I know better how to land the plane than the pilots
You would tell him to sit down and shut the fudge up
I'm going to trust the guys who were trained to fly the plane
Now let's use more relevant examples. Suppose the NY Times had to print a correction on a story. That is not a problem to me, they write a lot of stories with tight deadlines, I can understand making a mistake.
Now suppose instead the mistake is that the source they told me was a high level source in the Trump administration and because of that they were going to keep him anonymous but we can trust the NY Times they know who this is and he is a very high level source in the Trump administration. They write a number of exposes on the inner workings of Trump's administration using this deep throat source while keeping his identity anonymous. Ultimately we discover the NY Times lied, this was not a high level source, it was some guy working in a cubicle across town. That is it, once I know they intentionally lied to manipulate me pushing their own political agenda, then I cross them off the list. Yes, they are still a paper of record so I pay attention to what they write, but I no longer trust them. They are liars.
The same is true of the 20 experts who told us the Hunter Biden laptop was Russian disinformation despite having no evidence at all to support that claim. Liars.
The same is true of the people who said Hillary was going to win by 12 points in 2016. Liars.
The same is true of the people who told us that there was no evidence that Covid came from the Wuhan lab and instead it came from a bat cave and a pangolin. Liars.
The same is true of those who said that Biden was mentally competent. Liars.
If someone says they aren't sure, or makes it very clear they are simply giving their best estimation without having seen any evidence, that is one thing. But if they give me their full assurance as experts that something is true only for me to learn later they had no evidence at all that it was true. That is it, I cross them off my list of people I trust.