Of course they really polish their communication and websites, and they know how to sound scientific-y throwing in some graphs and stuff.
The problem is not only that, but that the same people who works in the media churning BS articles is the people who works in the fact checkers, and most of them are journalists, AKA experts in nothing that pretend to become experts with a few calls and some google-fu.
The reality, at least in Spain, is that fact checkers are just a side-effect of the kulturwars and don't bring any truth to the table.
This specially evident when they talk about something you really know about.
Of course, because fact-checkers happen to be lefty because of the, let's call, overton-window cycle, then the left choses to ignore this problems and just says it's the right-wingers that chose to ignore facts and yadda yadda.
While this is going on, right-wing, and many times right-wing extremist views, become the new punk and many yougsters are flocking to provide new blood to said ideologies.
It's all just so tiresome.