Key Best?
The warning they disclose a little further down the scroll is the age-old problem that, should your device be stolen (chances ever high) and your password into the Mac be observed prior (not unknown either) then Google's playground and all of your accounts therein are a free ride.
What Google are betting on ~ and we've seen them admit that the Holy of Holies in the form of their ranked search system may be stormed by GPT-style chats with answers at their finger-tips ~ is that this dovetails well with stronger biometric access by way of Face ID and fingerprints.
And, I like to think, our own form of 'Other Face ID'.
It may be why, for a second time in my life, people in California are at all cognisant of my personal pipe-dreams.