He’s talking about possibilities that are feasible, not what he thinks is probable or likely. And even in your quote he is being clear that any species advanced enough to be a designer themselves would probably have ultimately evolved by Darwinian means. It can in no way be interpreted as supporting the notion that he believes in intelligent design, but is just an example of him bending over backwards to find a scenario where the claim of intelligent design could be justified. And even if you conceded that to be a true assertion, it’s still a far cry from any deity being the ultimate designer of all life, which is what ID is really talking about.
Glad to see you’ve not even bothered trying to back the claim of polytheism.
Edit: I’ve looked up the quote you used, turns out it’s from Expelled, which is a horrendously disingenuous "documentary"
Dawkins had this to say about the interview:
If you truly aren’t looking to be deceptive then I’d hope you in the future try to leave your bias behind and to get a solid grasp of the full context. There were enough hints in what you quoted to make it clear he wasn’t saying what you claimed he was.