Joseph
What we see NOW is assimilation by R/C. Their congregations are dying off. The growth is within the orthodox.
My point is that in time Mizrahi will dominate the culture of Israel. Just from when I was a child we have seen a shift of pronouncing Hebrew more like the Sephardi. Many believe that the Sephardi/Mizrahi are closer to what Judaism was in the 2nd Temple period. At least more like Rambam’s era.