They probably listened to every Tom, Dick and Harry out there that doesn't know how to neutral duck, but instead thinks they have to block a high projectile every single time it's thrown.
Yes and no. Zoning will never be allowed to be strong again (due to modern gamers) but,
Reiko's design should've never allowed for full screen play in the first place. It was just a long time design mistake that was finally rectified. It has nothing to do with nerfing/buffing because tier placement or how many randoms on twitter tagged NRS with their tears. His strongest use for his projectile was always, and is still, to link after a poke.
Y'all gotta realize that NRS isn't making changes to this game based on balance, that's just secondary. The fact of the matter is that the removal of his projectile is a net positive for the enjoyment of the game. Whether you could deal with the stars or not.
Same thing for Kitana changes. The character was boring as hell so she needed more sauce. Does it matter that she was already pretty damn good? No, cause nobody wanted to play her or fight her. This is how this game is being handled, this is why Shang and Quan have been dumpster tier since launch. It'll always be sauce over substance.