everyone draws coverage. he's a great route runner, to be sure.
I think Josh just doesn't look for him as much as guys he's comfortable with (Kincaid, Shakir, Coleman).
It's probably as simple as that. No need for people to conjure up these alternative scenarios where he is sucking up all the coverage when he's in there, or that he is on ice until they "break the glass" come the playoffs.
It would make FAR more sense to give Cooper a ton of targets leading up to the playoffs so Josh can feel comfortable with finding him. The rest of this seems like nonsense. Keeping it "vanilla", simply by keeping a 32 year old journeyman WR on the sidelines for much of the season.... ? Why not just bench Allen?? It would get vanilla real quick..