What others have said about commenters/lurkers and not being able to downvote, but also I think the "sentiment" is more that SEO sucks than that this piece is garbage per se. I upvoted it because it's entertaining and it did, along with the discussion here, broaden my perspective on SEO.
The honesty is a bit refreshing, I agree. I'd love to read a good, anonymous confessional of the daily life of a SEO that's more intimate and less of their usual humblebrag PR.