What? The peacemaker wants to avoid arguments. Going around someone avoids arguments. The peacemaker would follow the advice on the site and go around someone. This person, on the other hand, is saying thats bad, and that a more confrontational (but less passive aggressive) approach is likely better.
That's both more mature and more likely to lead to technical excellence.
You should try and see how websites like this facilitate technological excellence even though they make you uncomfortable.