And I'll do the best I can to remove and disable it!
Edit:... learning your typing inputs.
I dunno, doesnt seem all that mandatory...
yup, and if I'm not mistaken, learning typing inputs is pretty much the definition of a keylogger. Lovely way for Microsoft to help those trying to get your info. Instead of having to trick you into installing malicious code/software, all they have to do is gain access to Cortana's "memory" of what you type. Be on the lookout for a big zero day in the near future.