Being aware of kinesthetic sensitivity, connection (musubi), position (tsukuri), and loss of balance (kuzushi) allows Nage to find "the path of no resistance" inspite of whatever Uke is doing.
For me, that is proper Aikido, coupled with what we term Kinesthetic Invisibility. It is the ability to move with Uke and connect in such a way as to take away all feeling that "something is being done to them." Without that feeling present, there is nothing to resist, nothing to counter. Resistance on Uke's part is imperative, because that's the only way Nage will know if what they are doing is real, and the path of no resistance has been actually found.