Maybe I’m old school but I despise the idea of the government tracking me as I travel. Time and time again they are caught violating privacy laws and abusing power.
Comparing an ephemeral photo taken of you to your government credential at the TSA checkpoint is a temporary formality. At some point, the government credential presentation will be unnecessary.
https://www.cbp.gov/travel/clearing-cbp/passenger-name-recor... (Control-F "What information is collected?")