Our fork is called NayuOS ( https://nayuos.nexedi.com ) and is a true system for hackers. It erases user folders on every restart and no extensions are allowed. It is very hard to track and since the Chromebooks are very cheap it is easy to exchange devices often.
It has to be run in Developer Mode thus you have writable /usr/. Chrome Brew is fully functional thanks to that but it is a security hazard.
My company moved everything to cloud so we access everything via browser. It was hard to get used to it but in the end it is a huge time saver. Google went the same direction.
afaik, chrome asks whenever a site requests location information
(if you go to chrome://settings you can change language preferences)
Chromebook hardware is great for the money. Replace the OS and you have the best of both worlds.