You're making my point for me. I'm arguing against Buddhists who maintain both that a Buddha cannot suffer at all, and that a Buddha is compassionate. I'm saying that those two assumptions contradict each other. If a Buddha is compassionate, he'll suffer in the way you said, which is to say he'll use empathy to feel other people's pain.

Elsewhere, I make your point about Kenobi, using the case of Schindler's List:

https://medium.com/grim-tidings/buddhas-are-nihilist-observers-not-compassionate-saints-986190699882?sk=849f6ac14ae8206435e2a64703aa5139