Since the the actual drone operator is claiming that they were innocent, then it seems strange to insist that they could have been combatants based on no evidence?

Here is another reversal comic/satire about killing civilians:

https://thenib.com/yemen-bombs-yet-another-wedding-in-americ...

It is hard to respond to this. It is true in absolute terms.

That said, do we really want a world like this? Because logical conclusions of it are not fun. It is not like I can wear 'I am innocent' flag. And clearly, not that anyone would respect it.

Only a fair trial can declare anybody guilty. Without a right to say anything they are innocent by default. The video don't record any obvious crime by part of the killed people. They are innocent until proven otherwise.

A world when everybody must prove that is innocent, so is not executed at first sight by a machine is terrifying. And as long as people starts seeing preemptive murder as a good cheaper alternative to justice, the fall is unstoppable. We really want to live in that world?

Typically the onus would be to prove someone guilty rather than the other way around.