“Yes, because cemeteries have no means of dealing with stuff left on graves to rot.”
Irrelevant. The owner of the plot where his daughter was buried had to clean it up.
I think in this context, you and I have a different understanding of the meaning of the word "had".
No he didn't. If he had just left it there, nothing would have happened.
Nobody held a gun to his head, he chose to clean it up.
He could have left it for the cemetery crew and they would have eventually cleaned it up.