Right. The dev had such a big ego that they didn't want to say "I was dumb and left open a bug", so the dev says "I was so dumb that I left open a bug in softw

Right. The dev had such a big ego that they didn't want to say "I was dumb and left open a bug", so the dev says "I was so dumb that I left open a bug in software I was also too dumb or lazy to write or even read". It's not better.