Somewhat important to note that its only the default in the US, India and a few other countries - presumably not the EU because of the whole Internet Explorer setting Bing as the default debacle a couple of years ago
Yep, important enough that they noted it twice in TFA, including in the first paragraph:
> "... at least if you live in the U.S., Canada, Hong Kong and Taiwan."
That is, the deal with Yahoo only applied in the US, India, Hong Kong, et al.