Where did he say he did it in work hours? Or that he did it instead of doing his job?
He used the word "yawn" to describe using a popular library without understanding the underlying architecture, not in reference to doing his job.
Honestly, I can't even see a tenuous connection between what you're claiming and what was said in the post. The man is expressing joy about learning new things, and you're... upset about this? For some reason? Weird.
