I used to always opt out at TSA checkpoints. Then I decided that of all places, the airport makes the most sense to use biometrics. I mean, a human comparing my face to my ID is functionally equivalent.
What scares me about TSA using it is that it normalizes its use. Next it's at stadiums. Then Wegmans. If it would stop at airports, then I would be okay with it.
Humans forget. The TSA allegedly deletes your photo, but they're quiet about the rest of the data they collected from that photo.
> a human comparing my face to my ID is functionally equivalent
Not at all? A human isn't committing you to long term memory let alone entering a detailed sketch into a centralized database.