They aren't trusted in a vacuum. They're trusted when grounded in sources and their claims can be traced to sources. And more specifically, they're trusted to accurately represent the sources.
I know I don't have as much of a filter as I ought to!
https://www.lesswrong.com/s/pmHZDpak4NeRLLLCw/p/TiDGXt3WrQwt...
Which is still too much trust