Well, I guess I can kind of relate, OP? After the title, I too was expecting something far worse. I would not go as far as call it insulting, but it is not very respectful and comes across as being in bad taste. If that is all there is written on that gravestone, it is not respectful or thankful or anything, it's literally just reminding the player: Iwata is dead. In a very blunt way. So it's certainly a bad tribute/homage, but it is not insulting. It can feel that way to us because the fact that Iwata is gone makes us sad and we wish he wasn't, so we feel like it is salt in our wounds. But it is not exactly an insult. Just a not very tasteful detail.