My direct experience is that there is a lot of skepticism about Apple on HN, much of it warranted, some of it (in my opinion, obviously) careening into unwarranted cynicism. But my observation is that comments critical of Apple that are most likely to get downvoted are ones with a clear subtext of "anyone who uses Apple products is an idiotic corporate shill who doesn't know anything about technology and it is my solemn duty to preach the anti-Apple gospel." If you come in with a chip on your shoulder, people will be inclined to knock it off.