That's backwards to what he's saying. He's saying if you have the combination, you have the requirements, not if you have the requirements, you have the combination.According to your logic you're saying she has mokuton which she doesn't. yin element and yang element is not a kekkai genkai, if you keep saying that they are the same then you're saying sakura has mokuton.
Kakashi has all 7 elements but he does not have the kekkai genkai like I stated before. Kakashi has yin element and yang element yet he does not have yin yang release.
So whether you like it or not you need to realize that Naruto does not have yin release but he does have yin yang release (kekkeai genkai).
What he's saying:
Having Yin-Yang Style means you have Yin Style and Yang Style
Having Wood Style means you have Water Style and Earth Style
What you're saying he's saying:
Having Yin Style and Yang Style means you have Yin-Yang Style
Having Water Style and Earth Style means you have Wood Style