I think we are underestimating and/or forgetting that the enemy gets a vote, and remote piloting something from Virginia all the way out to Japan or Korea or Taiwan involves many signals integrity steps along the way. This is to say that you should assume these signals are interrupted and you will not be able to maintain continuous control of the aircraft from whatever datacenter box the "pilot" sits in. That means fully autonomous decision making, functionally for the entire journey, and independent release authorization.

>or else we wouldn't need hundreds to thousands of drone operators in the Ukraine war

I don't think this is the reason the systems are not fully autonomous right now ("fully autonomous" here meaning that they can complete the kill chain independently, no HITL). Even if we assume it true that the drones are not "good enough" to be at parity with a human operator, if you had an essentially limitless amount of them, would you really waste the manpower on operating them in FPV mode? You would not, you would completely saturate the battlefield with them. Thus, as it was in the beforetimes and ever shall be, logistics wins wars.