It is partly a question of length. In general your comments, written by yourself, are shorter than the articles you post. In any case, very long articles are alienating; if they exist elsewhere, why not solve the problem by using a hyperlink? I find your refusal to do this bizarre.
If by "censor" you mean do we sometimes delete comments, then yes, we censor. If you use that word as it is commonly used in the English language (and I imagine it's equivalent is used in German), ie do we remove postings in order to get rid of political arguments we don't like, then no - clearly we don't.
No one has prevented you from posting political criticism of and even attacks on the AWL here.