I'm not sure if you've replied to my comment unintentionally, but I fail to see where what I've written lacks civility or even expresses disagreement; it is simply an observation.
(I should note that I am not complaining about my comment being down-voted - that would both be against the rules and suggest that I cared in the slightest, which I do not.)
> Be civil. Don't say things you wouldn't say in a face to face conversation.
> When disagreeing, please reply to the argument instead of calling names.
I think that disagreeing comments are not discouraged, if they are civil and if possible have a strong technical argument.
[Note: I upvote the submission, and a few of the disagreeing comments, because I think the article is in the right direction but too optimistic.]