It's an opinion piece, so it's sort of anecdotal and hazy by nature, I guess (ymmv). I'm not going to complain too viscerally about it.
The problem I have, though, is that the entire piece basically says "noise kills productivity" but the only linked research is saying that "exposure to aircraft noise increases morning saliva cortisol levels in women, which could be of relevance for noise-related cardiovascular effects." [0]
So I basically have an article saying "noise is bad for productivity and concentration" and a research article saying "loud noise at night might raise stress levels in women, even if it doesn't wake them up."
To me, the former is meaningless. I wouldn't even start to make an argument about it based on the provided material without bringing other sources to bat. It would just be anecdote v anecdote. However, I find the latter interesting, and makes me want to do a little more reading on that particular subject. I happen to be male, but the idea that extra noise might inherently increase levels of a stress hormone in the human body is just as interesting and important to me as whether or not I'm more or less productive in a quiet room.
tl;dr = The article content is fluffy, but the linked research is kind of interesting (albeit saying something almost totally unrelated)
[0] http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2801169/#__ffn_s...