People are not convinced by this whole face scanning thing fingerprint readers are here, they work, why over-complicate things with new tech? The fingerprint reader option in last weeks poll received over half of the votes.
Its telling that the both option is a distant second (34% vs 56%) and 3D face scanning by itself barely got any votes at all. Interestingly, more than a few comments mentioned iris scanners, a tech that seems to be on its way out (you cant do animoji with an iris scanner).
Anyway, it seems that most people prefer the fingerprint reader for its convenience. Face scanners need a good view of your mug, which is annoying if you want to unlock your phone as it lays on the table. Readers are faster too.
The news that face scanners can be fooled by siblings/parents has resonated with readers too. Apple (and vivo and Xiaomi) need to nip this in the bud as those instances seemed to be cases of poorly trained Face ID. The camera-only face unlock options certainly didnt help build peoples trust in face scanning either (even though its completely different tech).