I may as well tell my story then all those years ago, since everyone else is sharing their reasoning.
Originally, I ordered anti-interdiction services to confirm whether or not I did have active attackers. This information was deemed vital at the time as it was a dependency for further mission-critical operations. However, out of precaution, I still carefully mitigated my trust in its authenticity as I deemed all of its security measures highly experimental.
As I became more familiar with using anti-interdiction over the years, I also learned a lot about physical security due to my threat model, and discovered circumvention methods to defeat the security seals, “proprietary” nail polish patterns, and PureBoot Bundle (Plus). Due to this, I started to disassemble the products and manually audit each component; I reflashed each device’s operating system and firmware(s) using a “known good state” PureOS live image on a USB drive. The Librem Key, however, remains at firmware version 0.10, as Purism has not provided a newer firmware version (0.15) or hardware reflashing documentation.
Since then, I no longer use PGP, nor trust Purism for anything relating to anonymity/privacy/security, except their hardware kill switches, although that seems to be being removed from their products as of recently.