Is it Gregory Plotkins fault that the Ghost Dimension didn't satisfy?

Some say he has a good reputation, but he was the editor of the series, how could he go from just doing the finishing touches TO being in control of the WHOLE movie...?

Is it his fault that the Ghost Dimension bombed for many devoted fans and lovers?

I'm not sure who the writers were... maybe it's also their doing for messing it up, but Gregory was the director, leader of everything going on, apparently it was so hard to get help from Christopher Landon even if he was unavailable for some reason that still doesn't excuse his absence because he literally forged the entire storyline in his Brain, giving the job to some amateur who was just a mere editor? Are you serious?