It's a fair criticism.Come on, it was a damn fine episode. Those complaining that it was far fetched really don't get how manipulative the Governor can be. Maybe an hour long episode is not enough to showcase it but I'm sure he started working his way into the minds of everyone at that camp in a similar way to how he convinced all those others to attack the prison last season.
Plus, if you think the writing is lazy, then you'd be surprised that quite a few scenes from that episode were from the comics as well. The only difference is that in the comics, he rode in on the tank with people from Woodbury.
The Governor finally has his mortal enemy at swords end, and probably the deadliest member of Rick's group in Michonne and he decapitates Herschel?
The sick and brilliant man that built Woodbury.. stalked Andrea with such relentless drive he survived those walkers she trapped him with, and he's suddenly a tactical imbecile?
There were some great moments but too much was nonsense and frustrating to watch.