I just really hope they're having knowledgeable humans carefully review those contributions, as ever.
I don't really care where the code came from (though I am a bit concerned about copyright issues making open source licenses no longer enforceable) -- but I just want it to work and work well ... which a lot of AI code doesn't. I would be very sad if the Linux kernel itself becomes a bloated, inefficient, buggy, slop-filled mess.