User blog comment:FairyRaven/Fairy Tail Chapter 407: All for My Demise, Review and Commentary/@comment-86.70.179.180-20141101135309/@comment-7418318-20141102011635

Yes, it's speculation, but half of what we do in these review blogs is speculating. Why is it all of a sudden meaningless? And if it's so meaningless, why bother posting commenting about it in the first place?

There is a massive difference between Alegria, which made the material of Plutogrim and the effected people meld, and what Uosuke did. Basically what Uosuke did is pretty much the same thing that any Elemental-Make mage does, only on a larger scale -> manipulating and creating matter of a certain element or energy form.