Yes, that is what the final reveal will be with Luke and the message of the movie.

But we have to make the initial reveal shocking and devastating to Rey and the audience. Keep in mind that what Kylo tells Rey comes from Palpatine, who is known to lie and manipulate. So he tells Kylo exactly what he wants to hear: “Your grandfather turned evil because I played a part in his creation, so you’ve gotta be evil, too. No matter what your conscious is telling you.” He’s streching the truth; technically he did play a part in their creation, but only because he is such a massive threat and the Force reacted. Regardless, he knows he’ll also tell Rey that she has this same origin, which will make her more vulnerable to him since he would be her only “true” family since she had shit parents that abandoned her.

But the reality is Palpatine is taking credit for the Force’s own work. He only scared it and influenced it enough into creating Rey and Anakin. It all lines up with his character. Rey can initially think she and the Skywalkers are inherently evil by affiliation. But in the end Rey learns she is not beholden to Palpatine whatsoever and can choose her own legacy. The Skywalkers and Rey were created by the Force alone to be good people that defeat the Sith despite having both light and dark in them. Which we can assume their own darkness is just due to the fact that the Force itself isn’t only the light, its both aspects. But it’s trying to correct an imbalance with the dark (Palpatine) with people that have a tendency to swap from one side to the other.

We get to have our cake and eat it, too.