I compare sources with opposing biases because I believe it helps to parse out what's true and what's not. Bellingcat is absolutely in opposition to the Gray Zone line, I suggest contrasting their reporting on Syria for proof of this. That both of these sources are agreeing on these claims suggests there is some truth there. If you think that ignoring it is simply the most convenient thing for now, that's at least a more honest opinion than blanket denial and willful ignorance of independently verifiable facts. The latter is far more helpful to fascism than whatever you think you're accusing me of.