I agree with you, even though I like camo. Although, I believe there is a fine line between survival and survival ism. It depends on the circumstance. Camo can be helpful if stalking survival food, and also, obviously, if avoidance of detection by humans is desired.
I will wear camo or colors that blend into my environment, and if I need to signal for help, I can with whistle, mirror, a separate brightly colored cloth, fire, etc. I can only see bright clothing or backpack helping if for a prone individual or small child, basically someone who is incapable for whatever reason to the point that taking an active role in being found can't happen. I would rather have the option of being invisible if need be, hungry or paranoid as that might make me seem.