>services like winlink and digital messaging are hampered without encryption and become unsafe for the operators
How so?
How so?
It's like pre-https internet basically.
This also means winlink shouldn't be used for PII (which is sort of important in an emergency!).
If you can at least key exchange and encrypt between you and the next node, you have some safeguards and your messages aren't in the clear - but that is currently prohibited by the regs.
Digital signatures are permissible under the current rules and in principle avoid this issue although the software tooling around it isn't there. Similar example: Debian packages are transmitted over HTTP, but this isn't a problem because they are authenticated with GPG.