At the end of the day, we still have a very precise machine code with very precise semantics that must be executed by your hardware. You ignore it at your peril.

I don’t follow at all what are you talking about or how that relates to what I said…

For all that, I would never subscribe to the idea that software developer as a human agent behind the code being written would become obsolete any time soon.
You still need a professional to make the tool (that LLM is), produce correct code.

For the very narrow definition of “machine generated” in that human never used the precise combination of keyboard key presses that produced the final lines of code that gets committed to the source code repository, has been a long time a reality of coding

Loss of any human life is a tragedy, but lets not forget the context here — Russia invaded Ukraine and Ukraine soldiers are forced to defend their homes lest their families, friends and relatives are robbed, raped, beaten, killed, tortured or face other atrocities. Remember Bucha!

Will it be able to handle anonymous branches from jj?

This is BS argument. Disabling copy and paste on the site only works for annoying users. If some wants to copy the contents of the whole site, there are easier options than copy-paste.