You don't really need to know 3D math unless you're working on graphics.
It helps. But you don't /need/ it.
It helps. But you don't /need/ it.
Everybody has to choose things to learn and not learn, but my experience has been that putting math in the "not learn" category can make your life/career more difficult in some job markets. If most game devs decide they don't need to know math, that's just more opportunity for me, so I'm not too bent out of shape about it. :)