I do wish well-meaning guys would stop writing these self-flagellating pieces:

http://www.abc.net.au/news/2017-05-28/confessions-of-a-confident-mediocre-man/8562708

While the literature is pretty clear about gender differences in average confidence, the within-gender variance is very large, and many "mediocre dudes" are marginalised on other, non-gender axes.

These pieces just invite pushback from malicious parties, and the people harmed aren't the authors of these articles.