It's such a hard topic to discuss because everyone has varying exposure to how much ground empathy can gain. After living it, I can say that they are more lost than most people think.
So start treating them the way they will treat you. Personally I'll leave someone to die if they have a Trump sticker/flag/hat/etc, because they would do the same to me.
I'm a system integrator, and though I don't do it right now, I'd consider myself an expert in dairy. I could see someone specializing in chocolate similarly.
The reason people don't know about these jobs is because they aren't advertised very well. My MS in mechanical engineering barely touched on it and I sort of fell into it on accident by knowing someone in the industry.
Edit: thinking about it for a moment, I actually did some work for a European chocolate producer about a decade ago