[jlgaddis]

> Somewhat important to note ...

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."

[jwilk]

How and when they decide whether I'm in US etc. or not?

[robin_reala]

When you download an en-US localisation of the browser.