Like I said, I am basing my information from the number of reports on this site. It's a perfectly representative sample of the entire base.
We can only base it on what we know. As I said, I recollect 2 or 3 on this site. Most all Phantoms died from other user errors. And then battery death. And then ESC failures. CSC is far down the list. And entirely avoidable.
So why not fix it? I'll make my point again. To CSC, you need to descend at 100% while yawing at 100% while moving backwards at 100% while moving sideways at 100%. If you are flying like this, you will crash anyway. Removing CSC won't help you.
And finally, I am making a point about this for all the new people. If you don't fly like a total lunatic, you will never see this problem.