I really thought there had been a previous submission with more comments, but maybe it was another Parnas paper. The only past submission with comments:
https://news.ycombinator.com/item?id=8849468 - Jan 7, 2015 (5 comments)
https://news.ycombinator.com/item?id=8849468 - Jan 7, 2015 (5 comments)
From Feb 2016, with just 2 comments. The paper is much better than the comments would suggest.