Wikipedia:If you don't understand the rules of interaction...

The nutshell of this essay really does sum it up. Everybody on Wikipedia either disagrees or comes into contact with disagreement. Some will debate at great length. Some will not, but the value of a debate does not depend on its length. However, it does depend on some things, and one of them is civility. Debate becomes heated naturally when opposing parties believe honestly, and yet still do not agree. However, to have a lengthy debate about what is or is not suitable for content, a certain understanding is needed, of what the site wants as content. To learn and be sure of what the site wants in content, it is necessary to read guides and policies and similar pages. Interlaced with the guides and policies on content, are the guides and policies on conduct. These guides and policies are written in the same styles and often at the hands of the same editors. So, if an editor has genuine difficulty understanding the sites principles of civility, they definitely have the same issue understanding the principles of content, and therefore their opinions on content can be taken to be part of the same lack of understanding on every level.

Spirit
This guide, as most do, has a spirit. The spirit of this guide is to use reason to attack consistent incivility, by comparing the frequency of errors article space, to the frequency of errors in talk space. It is reasonable to assume, that upon a major disparity, a conscious decision has been made.