Don't see the logic of that conclusion.
Well, okay, let me spell it out a little more.
#1 - These people purport to be “whistleblowers”, but we know they were all working for the government prior to coming out as “whistleblowers”.
#2 - We know the government has entire departments whose job it is to spread propaganda and “disinformation”. They use all sorts of methods to spread this, both using government and non-governmental actors. What is to say they couldn’t use a few purported “whistleblowers” to also spread their preferred message?
As far as I can tell, the only way to distinguish an actual whistleblower from such a fake “whistleblower” would be to see if the story they are telling is true or not (and even that is not foolproof).