Can we go on a small tangent and wonder how we don't know when the guy was born?

Is it really that surprising that no-one has invested the time and effort into figuring out the personal information of some tech employee-turned-founder? I bet no-one outside of tech even knows his name.

A person with an Wikipedia page is not "some tech employee"

Wikipedia shuns primary sources, such as personal websites and company registration documents. They prefer reliable secondary sources such as mainstream news media.