User blog comment:IamJakuhoRaikoben/Chapter 473: Red Lightning, Review./@comment-5143845-20160215212107/@comment-7418318-20160216004124

Wahl outright said it's a wonder that Laxus is even alive, much less moving. So Laxus isn't just stopped by his pain, he has serious damage to his internal organs, damage that the removal of the particles won't cure.

We even got a kind of x-ray shot of Laxus organs and see that they are in bad shape. So I'm absolutely with Wrath on the matter.

Even with the particles neutralized, Laxus organs should still be in shambles. With him having trouble breathing, all the exertion should make matters even worse and yet she just get's up as if nothing was wrong? Give me a break. At least let him stagger, cough up blood or something... anything really to show that he's gonig in willpower alone, instead of showing him as if he's fully cured!

And as I commented futher down too: No, MBP don't work that way. They don't block off anything and are no barriers of any kind. They are poison. They kill any living being (except Zeref's Demons apparently) no matter if they are mages or not and they visibly damaged Laxus inner organs. Simply blocking off ethernano wouldn't bother non-mages and would leave inner organs undamaged.