Delete SIP?
SIP is a protocol, insecure, centralized, and "little used." I think there is more focus on decentralized p2p communication.
That's why the question arose...
Why not remove the SIP protocol from the application?
There are hundreds of SIP programs for Linux, Android and other operating systems, who needs it, can use it without problems from another application. People could continue using the "sip" protocol from other applications...
Likewise, if you finally decide not to eliminate the SIP protocol...
Why not make it optional by installing a plug-in?
That Jami, does not include SIP by default, but that with a complement can be installed and added to the program.
Maybe he thinks polemic, but I think that eliminating it is the most suitable for Jami.
regards