I don't think it's reqlly fair to read a person's frustration piece and assert they probably have a character flaw. I don't even see your issue with the article, really. I don't think it's targeting anyone specifically and it seems to be about doing things in excess. Maybe just the idea of people who are consistently negative contributors rubs you the wrong way.

Maybe avoiding to use pejorative wording would make a more convincing argument to promote a view still accepting meaningful advises through criticism, while judging unethical any form of essentialism view which reduces some people to despicable traits, rather than presenting a situation where some people are entangled in abject behaviors.