@Fire Fist:
1. Some things oda actually goes to explain. For example, bullets don't pierce Luffy because the guns are flintlocks and not rifled, Gear 2 works by Luffy force pumping his blood and creating an andrenaline effect. And so on. And some things are greatly exaggerated, like Zoro bleeding more than a bovine slaughterhouse, and people being able to lift four ton objects.
2. But some things do follow reality. Usopp can't pull an ICBM out of his ass. Luffy can't travel through time. Nami can't shoot lasers out of her nipples.
3. It's a different reality, yes. But if we want to speculate about impossible science, don't bash us, let us. It's not your right to criticize others for what they believe. You can offer your opinion, but it's rude to insult the opinion of others.
In short, we don't insult your opinion, don't insult ours. I know that the Science in One Piece is greatly exaggerated, but there are some rules of reality that are followed. That's why we speculate.
I am not picking on you here, you just had some examples that I thought I could use.
1. The bullet reflection, gear 2, and so on are things that work in one piece. They work in one piece no matter whether we understand them or not. You see enough bullets bounce off of luffy and you make the assumption that he is impervious to bullets rifled or not. You see his gear 2 trick you think it is just his body emitting steam in some way that makes him faster and stronger. To work in the story, they never needed an explanation. But when an explanation is given, it comes from the writer. The explanation does not need to have anything to do with logic or real science. Everyone here seems to be a dbz fan, look at that series. How did goku attain SS1? Well its a special sayan thing. Bam done. If there was some scientific explanation, it would not actually make the form any neater for the audience.
2. You assume that Ussop can't pull an icbm out of his ass, that luffy cannot travel through time, and nami cannot shoot lasers out of her nipples but if the writer wanted to, he would find a way to make it happen with or without explanations like those he used for luffy's gear 2 trick. Perhaps its a devil fruit, perhaps ussop created a miniature icbm using dials. That last one should not be said so carelessly. What happens when ussop gets his powerup and is shooting missiles? will you take all this back?
3. So he can have his opinion and express it as long as his opinion isn't that fan theories are stupid? Sounds like you are limiting his right to have an opinion and express it. Fan theories are just that, fan fiction. They do not relate to the story in any real or universal way, and are just ways for people to expend their imaginative energy. Fan theories do not deserve respect though. Sure you guys can have your theories, but don't act like they are correct. These theories are just what you guys want to be true.