Hawk, what were those sources?

I'd like to know - what they are spouting is outrageous.

Think about how many circuit boards or discrete wires/conductors could be made and not equal the weight you've quoted.

I'm sure the power requirements for the actual physical control surfaces are significant, but the actual conductor weights involved are probably more like 1/100th of the fig quoted. And probably copper, besides.

Battery + conductors + motor/servo weight might equal
the amount quoted. Throw in a bit of mechanical linkage to even things out.

Have a good day man. In honor of personal freedom and the open squirrel season, I think I'll go put a hole through dinner's head.