Protect the shooter?

[3steps]

Can someone please explain why there isn't a precedent set for preventing this? I have a problem with shooters who kick their feet out to create space and/or draw contact. And, I also have a problem with defenders who undercut. I know Jones walked into where Kobe's left foot was going to hit the floor. But the problem I have is this: Kobe kicks his feet out when he shoots. Normally, not that big of an issue, either offensive(very rare), defensive, or no call. But, a lot of the time when Kobe takes these fadeaways, he continues to kick his feet out so far to create space and draw contact that he is unable to land. His feet usually hit the floor at least 4' in front of his head and his body is so flat/stretched out that his bottom then hits the court and he falls and slides across the court. On this play, Kobe is definitely going to the floor. Shouldn't he be required to keeps his legs and feet somewhat under his body? If Kobe cannot land and stay on his feet, why should the defender be forced to back off when Kobe can't rightfully remain on that space on the court. And, if the rue makers want it to go the other way, can they make well known so that defenders know that they cannot contest the shot after a fadeaway is initialized so stuff like this doesn't happen again??