Might not have been an intentional nut shot, but was clearly unnecessary contact.
I saw it upon rewatching after your first post. I just think it warrants a flagrant much less than the OKC no-call.
My biggest issue overall is that Draymond was allowed to play vs OKC when the contact was more egregious, imo, and him playing would help the NBA create a better series. Against the Cavs and up 3-1, he is penalized when it could hurt GS and create a better series. I don't think he is suspended if the series is 2-2 and I think the NBA is keeping a finger on the scales to their benefit.