Fuck you and anyone else that thinks this.
Just because you have a jungler doesn't mean you can do shit-all in lane and expect your jungler to carry you.
Yeah, but what he's saying is that losing a lane isn't necessarily entirely or even partly the jungler's fault. If their lane feeds and gets pushed really damn hard, the jungler would have to be there 24/7 without helping ANY other lanes, not to mention he might not even keep the turret.