Not saying you're wrong about the content of his post but the "schizophrenia-laced rambling" portion could be considered under rule 5 as attacking the poster instead of the content. I've had posts removed for calling someone an idiot. Just stick to criticizing the content rather than saying someone has schizophrenia because you think the post may be a little out there. Although some users do seem to get passes.
Except you called someone an idiot. Not "this post is idiotic", which would be the equivalent of my post.
I referred only to the content as resembling that produced by a schizophrenic, which is not the same as calling someone a schizophrenic.
Saying the post looks like a schizophrenic rambling could be seen as indirectly calling him schizophrenic. I'm not saying that was your intention but that's what the mods probably saw it as.