Because plenty already exist.
As far as the whole ceramic thing goes, I just can't take guys like Grimm, Matt or Twisted to name a few seriously when it comes to anything technical or scientific. By and large, they're just parroting what others have told them as opposed to speaking with any kind of understanding.
On the technical side, they'll often spout things so outrageously nonsensical that it would be comical if it weren't for the fact that their incompetence misleads so many people...
...considering that the technical side is easy (by comparison) to learn, I have even less faith once they start talking science.
I am with you. While Grimm seems like a nice guy, he is really ignorant on anything technical and is often wrong when he tries to delve into technical topics (and then gets offended when you correct him in the comments).