I'd have to prove that as soon as you prove that the lightning can affect a force user, since the onus is on YOU to prove it, and you can't. Believe me, I've argued this thread many many times with IKC and I'd love to think Luke can use it on Kun, but we have no evidence of it being used on a force user.. So it's on you to prove that it can be, because you can't dispute a proof of absence..