A tiny minority of people who don't understand, or don't accept, the OSI Definition, is not evidence that it isn't the defacto definition. It really doesn't matter how much red-faced foot-stomping and fist-table-smashing people indulge in, it doesn't change the simple fact that the OSI Definition is the standard definition of what it means to be "Open Source". If you're not willing to accept that, that's fine, but realize that that ship sailed 20+ years ago.

As battles go, I'd ask if this is really the hill you want to die on.