Although even autonomous combat/ISTAR drones may require fibre spools for BDA, ISTAR, etc.

If we are ok with AI drones autonomously choosing bombing targets, then you're right.

I think Ukraine would be ok with AI drones launched next to a Russian airfield autonomously choosing targets...

I expect Russia will be ok with it in any situation.

Obviously the Russians wouldn't be one hundred percent okay with drones autonomously choosing targets in or near Russian airfields...

They'd be fine with the drones taking out all of their 3 and 5 engine bombers though.

I suspect the first big use case and subsequent rewrite of the battlefield will come from AI drones targeting enemy drones.

It's been done before, specifically in the naval context.