The cod community on youtube is one big circle jerk of a joke. Let's say GGG did come and say yes I comment over someone else's gameplay, she would lose some subs but not the hard core ones. It's not like it would kill her channel to admit it, but she keeps digging this hole for herself.
The dishonesty of the situation is what will do her channel in, not that her fanboy's care. But still your either playing the game on the screen or you say it's is some one else's gameplay. What is to be gained by having someone ghostplay for you.