@Aru:
No, no it is not. Mate, I love OP, but let's not forget that everything has flaws in our hate of Bleach and Naruto. Luffy can't bite his finger into the bone, pomp air inside and make all of it huge. Bones aren't connected that way, air can't travel from the small bone in his finger to the rest of the bones in his body. If it was him biting and putting air inside his veins? Yeah, okay, that's a "maybe", but what he does? Nope.
And let's not talk about this any more, we have enough stuff in Bleach and NAruto to talk about and how shitty it is.
but that makes part of One Piece fiction, or does fear molecules(or whatever) and moving body but immovable molecules, and dead but alive controlling makes part of Bleach fiction? Since when? Was it at least well explained? Or just thrown in this chapter.
Basically what I'm saying is that bringing something from real life laws and exaggerate/make a little(or a lot :P) different it in your work of fiction is OK(of course it depends how is showed.), but having things in your fiction that contradict others things in your fiction is a NO NO. Unless in Bleach fiction being dead and being alive, staying immovable and moving aren't the same as in real life laws and aren't mutually exclusive, than that is not OK.
True be said Kubo could spend sometime and explain how everything works and how all the strange concepts that he throws come and so making that all good and all, but when he just throws things, gives them importance but doesn't explain them further than they have to come from someplace, in this case the real world, more because he used some scientific real life terms to describe what was happening.
If Oda had taken what Luffy did in Gear 3rd and used real life terms and than stopped the explanation half way, than even I would call it bullshit. If he just shows Luffy blowing air in his finger and all of his hand getting bigger than that is acceptable.
Kubo could do like One Piece and give little explanation, she could say that she doesn't feel fear because right now she is frozen and no emotion affects her, I would be OK(even though right now I am probably totally prejudiced with Bleach and would find any excuse to say is bullshit :P, but that is Kubo fault too, for bullshitting me so many times). Or he could do like Toriko and explain what is the phenomenon in real life and than say how it diverged in the fiction(of course he would have to take back the I'm dead but alive, I'm immovable but moving and the fear molecules). Or he could even create the system of fear molecules and of what in reality happened with Rukia and with her immovability.