The issue with Ham and Reticulum is the legality. It is a bit of a grey area whether key cryptography is allowed over ham bands or not. Many say no. FCC says you cannot encrypt amateur communications for the purpose of obscuring the message.

There is the grey area. Yes, RNS packets are in fact encrypted. The reason is for secure key transactions across the network and propagation methods, NOT to obscure the message

Obscuring the message would be a side benefit/issue as according to current rules in my opinion.

But not a lawyer...