Like I said in the post just before yours, FaceID actually does this even more seamlessly than TouchID did.
I was ready to agree with you for the first few days of use, but then there have been daily occaisons where it won't unlock for whatever reason (face angle, mask on, sat with my hand on my chin etc etc). Placing a finger on a button when picking it up, no matter where my face is or the angle of the phone, feels better for me...