Some thoughts:
One thing to realize is that when you posted your answer, there were fifteen answers already. Upon clicking "answer" you should have seen:
Note that your answer doesn't really add much over the prior 15 answers. It is more or less a commentary on the situation and doesn't really address the core problem and a suggestion which seems tangential to the core issue the OP has.
The core problem from the question:
My question is how can my team and I get on the same emotional level of someone who is nearly irreplaceable and I have no intentions of getting rid of? I would like tips on how I can calm him down as I have no experience in doing so.
Everything in your answer there is commentary on the situation with a very small amount of actual actionable in it.
It would also benefit from an explanation of how and why you think your suggested solution will actually solve the problem the OP is facing. Your suggestion is tangential at best and probably would be better suited to a more comprehensive explanation, if you think that it is the correct action for the OP to resolve the situation the OP is facing. It's possible it might, however you have not given me a good explanation for why it will fix the issues presented in the question.