Kurtz probably died of sadness after watching what Disney did to his characters.
Agreed. Those were two great movies, destroyed by PC Dizney.
He could survive anything.
Certainly, Disney did them even worse than Lucas ever did (and I heard they had a massive falling out over the ending of Return of the Jedi where Lucas turned it into an unrealistically happy ending).
The stories and characters are still around. Disney does what most of Hollywood does nowadays: Inferior remakes.