I don't think Apple would even want/be willing to support anything other than Swift, and probably only iOS/Catalyst development. Anything complex with multiple languages (Objective-C, Swift, C, C++ and/or any scripting) would probably not be supported, so there wouldn't be any chance of "porting" your existing projects to this iXcode.
It might be an evolution towards "coding-as-a-service", which I've been expecting: https://macintouch.com/community/index.php?threads/competiti...
However, your forum post says you believe Apple wants to take the power of the ability to locally compile and sign away from developers. This is unlikely for a number of reasons, one of which is completely breaking all games built using non-SceneKit workflows (basically all of them) along with other apps that depend on outside compilers.
It starts bringing people in and getting users’ feedback which leads to better version 2’s and 3’s, etc.
Disclaimer: I use all Apple gear.