Probably cause basic google search says that he thinks we are living in a post truth world (title of his book). By definition he shouldnt be listened to for gathering truth. Truth was so last year according to him.
Because Bellingcat is little more than a CIA information laundering mill that is staffed almost entirely by former intelligence officers and is funded by the US and British governments (among others).
Edit: For those who doubt Bellingcat is little more than a CIA mouthpiece, it is something they brag about.
>But, perhaps more importantly, it has also enabled U.S. officials and lawmakers to discuss Moscow’s skullduggery openly without revealing the sources and methods of the U.S. intelligence agencies.
