Note that most of the points you raised are clearly not bugs – most notably, things like non-rotating black hole or colormap choice. At the very most, these can be considered missing features, but they don't affect correctness in any way.

You seem more interested in putting effort downplaying criticism and upholding the optics of "scientifically accurate thing from researcher in big name university" than actually putting effort on making the thing good and using the amazing feedback you got