Maybe I did not dig deep enough, but I did not see concrete claims that fairphone doesn't do this on either of the linked conversations? It was all suspicion dropped on murena and e/os, and some bad marketing by fairphone. I do see now elsewhere that fairphone doesn't have access to the secure enclave. I guess, my attack model for my personal phones doesn't really account for "my phone got stolen", I'm far more worried about impersonation and remote phone hijacking than needing to be safe from confiscation from feds.