In a way, I'm saying that being able to pull off Aikido waza against a resisting uke requires a degree of competency with aiki that goes beyond what's typically needed in other arts, ...
Yes, it seems so.
Is this not a terribly BAD thing?
Are there videos of this being achieved (by Aikidoka?) or are there only stories?
It's only a bad thing if you don't care about developing aiki.
If you want to train people to develop aiki, what better way to do it than focus your art on exactly those techniques that can't be done effectively without aiki? Because no one would focus their whole practice on only working with compliant ukes, would they?