I dont agree with this anymore. Ray might be the best shooting out of those options at this point, sure, he knocks down three's at a still impressive rate. People are missing out on the fact that Ray takes 18 seconds to get open, most of the time that still doesnt lead to a good look. He can't drive or create his own shot anymore. He is a horrible ball handler, and doesnt finish around the rim well.
If Paul Pierce was still that guy who could just drive at will, then Ray's role is still fine, but with Pierce slowing down we need another guy out on the floor with him that can make their own shot, drive to the basket, and knock down shots as well.
Lou Williams or OJ Mayo at the right price is the right guy for this team now.