@Onmyom I disagree with your post "Just say no!".
I get the reasoning and I see how that can be applied to many applications or even entire OSes + other pieces of technology. I've been using iA Writer since v1.0 and I don't see the author's complaints in the specific case.
Besides the syntax suggestions feature, which I don't use and is easy to disable in the preferences, the only other change has been the introduction of wikilinks — a godsend for people like me.