I'm basing his ability to showrun on his 5 years of Doctor Who. Considering the closest thing he'd done to it before was a Virgin New Adventure (which, by the by, had some gay oral sex in the back of a taxi - something I don't approve of in a book that was meant to be part of the continuation of a family show, though lots of the NA authors were writing that kind of thing in, so it's more a problem with that range as a whole), and some obscure sci-fi kids show no one would otherwise remember now were it not RTD, I don't think he was really the best choice, and think he was chosen for the aforementioned QaF. Of course, this is speaking in hindsight; had he been brilliant at Doctor Who I wouldn't be complaining, but I think choosing him to showrun was down to his being fashionable at the time rather than his having any talent for science fiction.
As for refusing to take back the accusation of me being a homophobe, I'll try and say (in as unironic a way as I can, considering this is what they all say) that some of my best friends are gay. This isn't me trying to prove to you I'm not a homophobe, but in much the same way as I pointed out I have black family when you baselessly accused me of racism a while back (now I think of it, it's a good thing I have thick skin just to deal with the amount of aspersions cast by you alone), it's to point out why I find it so extremely offensive that you accuse me of bigotry and prejudice in the first place.