I think this is a very valid interpretation. But like, to me, at least, I feel like it overestimates JGY too much.
Here’s the way I see it, JGY didn’t mean to lead LXC there at all. He meant to get HIMSELF there, and LXC just followed. So he pushed LXC away because “fuck you I don’t want you to die with me”.
Cause, okay. Looking at the sequence of events… it’s stab, emotional outburst, go to coffin, push away LXC. At this time he is utterly ruined, missing an arm, hope dashed, in intense pain, and just got stabbed by the one person he cares for. I don’t think he has the mental capacity to plan to ruin LXC. This is a moment where he isn’t thinking about LXC’s feelings, only his own.
To me, I think the outburst was how he genuinely felt. He broke through a silencing spell to say it. When he guilt-tripped JC, it was very deliberate. He spoke calmly. Here he is full ham. He is hitting LXC where it hurts the same way NMJ called him “son of a whore”. It’s not calculated, it’s an outburst.
If the plan was “lead LXC there, resurrect Dage, push away LXC, guilt him for life”, it’s way too complicated. First it depends on LXC following him, which he can’t know LXC would do, because he clearly never expected lxc to stab him. Then it depends on him actually being able to save LXC last minute, also an unlikely scenario. It’s just a step too complicated in an emotionally intense moment.
The way I read this is that JGY cannot stand dying by LXC’s hands, so he choose to die by NMJ’s. NMJ has been his nemesis, his fear, so to challenge this on the last moment and shout “I ain’t afraid of you” make sense. LXC was that one person he thought WOULDN’T harm him, so dying by LXC’s hand is unacceptable.
If you think of it like this, the plan is “release NMJ, die”, much more straight forward thought for a pain addled brain.
But then LXC followed him, so pushing LXC away was a reaction, and not premeditated.
His last words were not addressed to LXC at all, but to NMJ.
I choose to interpret the actions this way because if you try to think of the event from JGY’s POV, this is the most straightforward way you can interpret it while being canonically consistent.
To think JGY has the CAPACITY to consider LXC’s feelings at that moment and plan that sequence of events… You can work it, but it’s much harder to comprehend.