Biometric data can be copied. Which is usually one of the most important flaw of this form of authentication.
If someone (or something) steals your biometric data, you cannot change it.
I would be much more convinced by a cryptography based solution where you can create a token on some separate hardware device and have to give a secret PIN to authorize it's creation. Then that token would prove for a time that you are indeed a human. No AI can read your mind so I suppose that's the safest way to prove your human... Until your PIN gets stolen by an AI somehow...
I hope most governments around the world will provide cryptographic certificates to their citizens to help them manage their online identity.