Blizzard banned a Hearthstone player for pro-Hong Kong statements, so HK protestors are appropriating Mei (from Overwatch) as a symbol of the free Hong Kong movement.
This is, sources say, my shit
Microsoft has removed the ability to create an offline account on new Windows 10 installs unless your PC is offline. Disconnect your network / modem before installing Windows 10.
Another option is to keep trying to create the MS account with a fake phone number until it gives up and lets you create a local offline account.
Bonus tip - if you don't want to set security questions when creating an offline account: create one without a password and then set the password via the control panel after logging in.
A cosmic purple hairball spreading cheer and video games to the unsuspecting masses!