What stands out to me is that this creates another 'key' that the browser sends on every request which can be fingerprinted or tracked by the server.
I do not want my browser sending anything that looks like it could be used to uniquely identify me. Ever.
I want every request my browser makes to look like any other request made by another user's browser. I understand that this is what Google doesn't want but why can't they just be honest about it? Why come up with these elaborate lies?
Now to limit tracking exposure, in addition to running the AutoCookieDelete extension I'll have to go find some AutoDictionaryDelete extension to go with it. Boy am I glad the internet is getting better every day.