Some things are better left off to discuss on a forum rather than leaving as a comment on a gallery item. Gallery item's
comments are usually more meant towards the art or the submitter itself, not ethics or the likes.
It's not forbidden to do it, but it is better put to discussion than a comment. The uploader or other people reading
them might not be pleased or even offended by the comment.
It could help you reading some gallery comments of what others say for example and adjust a bit to that. Comments on
scans are usually bursts of some thoughts like "amazing". Indy-art and walls tend to be more detailed because
of the artist. Nevertheless, you are free to speak your mind. Just keep in mind that comments are comments and usually
not reacted on and when you speak your mind about something it usually asks for a discussion. Speaking your mind is
positively recieved usually in the wall and indy art galleries though :3