Don't want to be rude (nor rehash old topics) but is pypy used that much to be considered important? People with performance goals go to C, whether its a libra

Don't want to be rude (nor rehash old topics) but is pypy used that much to be considered important? People with performance goals go to C, whether its a library or some Cython. Don't get me wrong, i love pypy and the rpython jit.