I haven't checked whether the site is crackpot or not... But I experienced that kind arrogance from math pros at the college. (I stop here, because the remaining would be just a rant...)
That's sad. Whose responsibility to make it accessible then?
I see this attitude on Wikipedia where...
I was always good at maths, just because primary/high school math was simple enough to find concrete examples for the abstract concepts, and that helped me a lot on exams.
Since then I tried to grasp more advanced concepts. But I always faced with pure overformalized, overgeneralized stuff...