It might be nothing technical. Some developers avoid paying for the Apple dev program on principle. Joining it could be seen as supporting Apple's attempt at b

It might be nothing technical. Some developers avoid paying for the Apple dev program on principle. Joining it could be seen as supporting Apple's attempt at building walled gardens. There's also the operational challenges for open source like who will sign-up and how to secure or maintain the signing keys etc. It brings in lot of friction.