Well done!!
I won't go into the box of death. They don't like when you won't comply so an attempt at the humiliation ritual ensues.
I get my junk patted down everytime I fly. When they ask if I'd like it in private, I just say "have at 'er".
They usually end up the embarrassed one.
-----
Bio-metric boarding - hard pass. Never had an issue. When USA ramps up the Palentir state, I'm going to need to rethink the process.