Damn this is a pathetic response. He could've said "We've tried our best to make it as polished as possible before launch, and are working towards further optimising it to give you the best experience, wherever you play". Even if they did jackshit, it would not come out as condescending and snarky. Maybe he wasn't prepared for a tough question on the spot right at the beginning of the interview, but it does show how he thinks about his games. In his mind, the game running at all on PC is optimised enough.
I am not saying he's bad for not making Creation Engine super optimised engine on this planet, I'm saying he's bad for not acknowledging it is currently most demanding engine despite looking merely half as good as Cyberpunk 2077 or idk Arkham Knight.