The safest, most cost effective version will not help you when you are their designated target for disagreeing with the regime.
After all, the regime already says such domestic dissenters are terrorists, and have, on multiple recent occasions, justified the execution of domestic dissenters based on that.
The safest version will still be better overall regardless, by definition. It is also a better future for most if it is inevitable that the war department is going to use a less safe alternative if they can't use the safer one.
The safest version will be the one most effective at killing dissenters without killing regime personnel. So yes, it will be better, for the people controlling the killbots, not for their victims.