To anyone unsure about the above quote. Jeff is full of shit. Often he dances on the edge of wrong advice, today he has leaped over it.
You don't need to be a math whiz, but you damn sure need to be math inclined. At the very least you need logic. Any kind of graphics programming - math.
But if like Jeff your career consists of simplistic apps in VB, well then I still wouldn't call you a great software developer without math.
Don't aim to be at best average in your career, it makes for a shitty professional life, which is a big chunk of your whole life.