Sorry, I guess it was more of an association in my head with the way you phrased it.
He may not have final say on the casting, but he's the one who pushed those 3 specifically? SA and GG (and possibly MB, but I don't remember, he did at least meet her several times before casting for Supergirl) he made sure were the first people to audition, which ended up being very beneficial to them both (and he knew that). So, yeah, that credit is his. But for those complaints specifically, we don't know what involvement he had with that at all. How do we know he didn't ask for a chem read or fight for CL? Idk if anyone would come out and just talk about it, especially if it involved fighting with people he worked with