No mate, he really isn't - he had one bad game! His Sunderland performance was excellent, which everyone except you for some reason recognises.
http://www.thefa.com/news/england/2015/nov/ross-barkley-everton-run-riot-against-sunderland
The reason I wouldn't bench him is because I'm not utterly nuts. He's made us tick for the majority of this season. The alternative is Naismith, and for all the good things Naismith can do, asking him to be a playmaker is just about the stupidest idea ever. Or it would be, if you hadn't have suggested Gibson at the same time!