Man, if that's right I'll be annoyed, not just because it's treating MJ like shit (to put it lightly), but I jokingly suggested for something similar to that a few weeks ago, with Moira walking around in MJ's rotting corpse lol.
Also there's a joke here to be made about Wells writing MJ, man, keeping promises to myself is hard...
Oh she literally did that:
(X Deaths of Wolverine#4)
In-universe there's little reason for her to not have done this to MJ as well, specially since Moira never met MJ before, and she didn't hesitate to do this with Banshee, who she did know, out of universe, MJ has a stronger plot armor than the usual Krakoan who tend to get die if they stub their toes too hard.
Same Marvel that made Moira have such an incomprehensible plan she's kinda comparable with Jackal's plan in clone saga, also same Marvel who thought the new ASM#1 vol 6 was a good idea to publish, so yeah, they're the "House of clickbait ideas"
.
It's a possibility but it's not confirmed yet what Moira did with MJ, given that she's a robot now (Unlike when she used Banshee's skin), she could have more options than wearing MJ's skin, and when she attacks MJ, she says "When ye next wake up", implying she's not killing MJ.
Of course, that doesn't stop Moira from flaying MJ's skin, and if that is what actually happens, I do wonder if this is something that Wells either came up with, or allowed X-Office to do.