Either weapon can also be defended against as well with time and refitting. That probably won't happen until after a bunch of these craft are knocked out at a critical moment.
More exotic weapons like the ultra-high powered laser or plasma gun could destroy the UAV directly.
It is probably a bad idea to assume that our forces will always have uncontested airspace, clean satellite links, and a technologically unsophisticated opponent.
There is no such thing as an ultimate weapon.
One wouldn’t be using these sorts of UAV’s against an enemy equipped with effective laser weapons !
Even the US and Israel still lack operational laser weaponry. The Taliban ?