The problem is deeper in that, because NumPy is bloated too (see https://numpy.org/doc/stable/reference/generated/numpy.mean.html https://numpy.org/doc/stable/r

The problem is deeper in that, because NumPy is bloated too (see https://numpy.org/doc/stable/reference/generated/numpy.mean.html https://numpy.org/doc/stable/reference/generated/numpy.mean.... versus https://numpy.org/doc/stable/reference/generated/numpy.nanmean.html https://numpy.org/doc/stable/reference/generated/numpy.nanme...). Perhaps even further, the shift now is for "Python" to be written in neither vanilla Python nor NumPy directly, but at times in PyTorch or TensorFlow where each library provides its own workarounds.