Jiraiya has a crushed throat and is at the bottom of the see missing 1 arm and with chakra receivers piercing his body. What could he possibly say in his condition even if he is alive which he isn't.
I would be thrilled if he came back. I would agree, if he came back, it would ruin what he died for and believed in. He trusts in Naruto to carry on what he couldn't do. I will miss him just like everyone else will.