"The afterlife is ‘technically’ part of Marvel continuity (and Jack Kirby is ‘technically’ ‘God’), so if you want to make an argument that there's strict Judeo-Christian set of post-death rules for a resurrection to result in a soul-reclaimed and soul-equipped being, then cool," Hickman said to AIPT. "The problem is that we don’t do that. Almost every single character death we undo, or character we bring back through whatever story construct or general shenanigans doesn’t go on a soul quest to recover their essence (in the past, yes, sometimes, but not anymore–imagine if we did that nowadays in our current death-resurrection cycle, that’s a lotta issues)."...
... To finalize, Hickman brought up that this specific style of resurrection was purposefully created because of its ties to the past of the X-Men and their larger history, specifically with Professor X.
"The broader point is we bring back characters all the time in much less elegant ways, and this one is actually based on an experience Professor Xavier had in earlier X-Men comics, so it makes sense he would think of something like this. He knew it worked...As for the reason it seems creepy, well, it feels that way because we did all the resurrections at (generally) the same time and presented it as a ceremonial. It feels religious. It feels other. It feels terrifying. Unless you’re them, and then it feels ascendant. It feels like victory."