I don't think the Phoenix renders any of its hosts unkillable. I think they can be defeated in combat. The very fact that they can feel pain proves that. So yeah, I think there are people who can kill Jean or Rachel. I just don't think you can physically kill the Force, since it's an abstract. When GS writes his essays about what the role of the Force is, he's talking about the Force itself. Killing an avatar of that Force is not impossible, but very impressive. GS knows that and he knows that it means nothing to the grander role of the Force. So those scans of an AVATAR being beaten aren't PIS or plot device, but if they're Whirly's attempt to show that the Phoenix Force isn't important or powerful, then those scans don't show anything at all.
Either way, from a factual perspective, Whirly doesn't have much to go on and he knows it. I think Whirly isn't doing anything more than being annoying to Cresh and GS and you guys are both so obsessed with winning that you're letting him do it. He's inside your head for absolutely no reason, and THAT is his real motive behind this thread, nothing more. I mean, just look at your essay-length replies and look at his one-liners. C'mon, guys! lol.
The best thing to do it post your scans and let the readers decide. If they're sensible, they'll know who to believe.
Me!