Yes, but what I mean is it is an asspull that his new technique that he develops happens to be the one necessary for them to counter Kaguya's instant dimensional traveling. In my personal opinion, I would like Obito to stay exclusive to Kamui dimensional traveling, not any possible dimension. Of course, that is just a matter of opinion and it doesn't really matter. I just think the way I guessed Sasuke would escape seems more "fair", for lack of better wordHow will it be an ass pull....Kishi has him there for a reason and Kaguya happens to be using interdimensional travel just like Obito..
Obito currently has 1 technique per eye...
His Eye:Ghost Mode,Teleport people by touching/warping himself into his dimension slower
Kakashi's Eye:Teleport people from a distance,teleport himself
Together=Another ability..probably being able to travel to different dimensions not just the one
Just like how 1 eye=Amersterasu,2nd eye=Tsukuyomi together =Susanoo