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That's true, but that sounds more like an additional layer to communicate charging info, negotiate which devices should get more power, etc.

I do half-suspect Apple probably tried coming up with a better solution (e.g. one not involving a charging mat), but ran into technical (probably laws-of-physics) challenges and went with Qi instead, because otherwise there's really no reason they couldn't have done this earlier. Or perhaps they just needed the time to re-tool for a glass case, who knows.

The answer to why it took so long may not be any more complicated than "Apple charging cables are notoriously short-lived and surprisingly expensive."

Airpower is exactly that and they said it during the keynote. They promised to work to make some of it a part of the standard eventually. You know how that goes...

Why did they not name it Apple Juice instead of Airpower? :) If you're referring to the FaceTime announcement, it was a third party that forced them to keep it closed (from memory).

FaceTime was also going to become an open standard which everyone could use... Here’s hoping though.

Actually, the device specs say both the iPhone 8 and iPhone X use Qi wireless charging.