Py 3 is not the future of CPython either. Even today the overwhelming majority of projects use 2, even new projects.
Also, libraries are slowly going to drop Python 2.x support and go Python 3 only.
If by great inroads you mean "around 6-10% in PyPI after 8 years of trying", then yes.
But unless it gets over 30-40% it's not anywhere near significant in my charts...
All the developers needed was a kick in the butt. If only PSF did that sooner.