It’s not hooked into the bootloader, the app gets shipped with stock FPOS and if you start using Orange it get’s activated.
There is similar functionality for Telekom and it could be used for other carriers Fairphone is partnering with (haven’t looked in a while).
If you want to get rid of it, you either have to root your phone, or have a look at the #oslist for alternative ROMs that won’t ship with that kind of bloatware.