They're not homogenous organizations. Not sure about the FBI, but AFAIK the NSA has always been in an awkward spot of being split between defensive and offensive missions. It wouldn't be particularly surprising to have one arm going "you should all use encrypted messaging, it's the most secure" while the other arm is frantically trying to break or backdoor said encrypted messaging.
They're not homogenous organizations. Not sure about the FBI, but AFAIK the NSA has always been in an awkward spot of being split between defensive and offensive missions. It wouldn't be particularly surprising to have one arm going "you should all use encrypted messaging, it's the most secure" while the other arm is frantically trying to break or backdoor said encrypted messaging.