In reply to USBRIT:
Actually, I've gone back and watched more of the video than I did when I posted the link. In the first section, he
definitely does have a drill with him, (it's short-clipped just right of his chalk bag) but I hadn't noticed him placing and loading the sky hook. Initially, it looks like it must be on a very short sling on his belay loop, (maybe just the one they sometimes come with), but later he has it on a longer sling, even in the first scene. The scene with the tree, viewing from the side, shows it more clearly.
The point I was trying to make is that this is a 9a route, not some easy 6a+ for example. If you had nice pleasant stances where you could relax a bit, whip out the Hilti and whack in a bolt.....well, it's not very likely to be a 9a,is it?!
I just don't think having a drill bit still rotating at high speed as you ping off a sky-hook or a hold, potentially directly above your head, is a smart situation to find yourself in when equipping a route. How well-cleaned is the drill hole before the expansion bolt gets battered in? These are the factors which, to my mind, constitute less-than-ideal equipping. In fact, it's just plain daft.