That's true. I think what didn't connect with me was there was a build up as to who this is. What's the big reveal? Oh, it's who we figured it probably was. It wasn't some terrible thing, but at the same time it was fairly anticlimactic.
So now will see how they retcon the sith have been extinct for a Millennia. Because there's no way 3 prominent Jedi don't remember this. Sol knows he's a sith because he tells him, you know me as sith. Or something like that. So he's obviously going to say something to the council, yoda...