Eh, kinda. But there was enough self-deprecation there that it doesn't leave a bad taste in my mouth, and I consider this a genuine reflection.
> Why did I need validation from my org chart? > Pretty quickly realized I was being kind of a bitch. > I have a bad case of Why Not Me syndrome.
These cut deeper than faux modesty and are clearly insecurities. It's the rebelling of a sensible superego against an id hungry for validation, and the author doesn't downplay either of the two.
But yes, I'm sure he also gets a perverse thrill out of advertising his achievement, even if he intends to disparage it. It's a complicated psyche I'm rather familiar with.