All the terms for the Google AI API that Steve read out are actually legal requirements, at least where I live.
On the other hand, it is a dismissable offence to use AI at work, without it having been tested and authorised by the Chief AI Officer and having received training, so the Google browser is now off-limits for 99% of our staff.
You can use a registry hack to block the AI API on Windows:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome and add a new DWORD “GenAILocalFoundationalModelSettings” and set the value to 1
On macOS it is a bit simpler: Enter chrome://flags in the URL bar and turn off the option “Enables Optimization Guide On Device”.