Does Google force all their employees to use and Android phone provided by them?

You could use an Apple or an alternative to Android like Fairphone or even load GrapheneOS on that Google Pixel phone. Even better would be a Linux phone that uses an Android VM so it looks like a bare metal installation.

Could go old school and just get a digital only camera that is not even part of a smartphone. An hidden camera in a pen or shirt button would work too.

Has anyone hacked the Meta glasses so they don't communicate with Meta and allow for communication to your own designated servers?