It's interesting seeing this the same week Apple announces it's cutting out of the box Python.
"While Python continues to remain completely independent from the operating system, every install of Windows will include python and python3 commands that take you directly to the Python store page"
https://devblogs.microsoft.com/python/python-in-the-windows-...
It is not correct to say that Apple did not maintain support for it.
Upstream Python is 2.7.15.
And I'm not saying those Linux distros are any better, although at least they typically have officially supported Python 3 packages, even if they are not installed in a stock installation.