When someone points out a painful truth, it's better to take a good look at oneself, be honest about our flaws, and accept their advice, than to just reject it and consider the other person as mean-spirited.

> Many of us programmers spend a lot of energy to keep systems simple

"Many" is not good enough (and makes me think of the cringy and problematic #notallmen thing on twitter). Ask yourself: who introduces the complexity to those systems again?