Correct. Encryption (or more specifically, obscuring the meaning of a message) is generally not allowed for amateur radio stations except in very narrow circumstances. So any hams using this would have to turn the encryption off.
However, it looks like this stack has encryption available as an option for stations who are transmitting sensitive data and are NOT operating under an amateur license. (Probably government-sanctioned communications or emergency humanitarian efforts.)
However, it looks like this stack has encryption available as an option for stations who are transmitting sensitive data and are NOT operating under an amateur license. (Probably government-sanctioned communications or emergency humanitarian efforts.)