Seems to be a fork of radare2 that is not based on a technical critique, but more emotional one. Stress and a CoC seem to be the main reasons. And they want "to focus more on stability" instead of features. Personally I never had stability problems with radars (although I had problems loading some more complex/large binaries). Smells to me like a fork for some reason or the other, but not technical. I will leave a comment that pancake made here because I couldn't agree more

> not going to feed the flame, we had some different views and personal conflicts. so i guess it's better to avoid fighting each other and be constructive building whatever they want