The problem is that "modern python" really includes Python 2 in addition to 3. You can't practically ignore it the way you can ignore ruby 1.x. Yes, things are very slowly moving to python 3, but there is a reason most systems have python 2 and python 3 and even now it isn't uncommon for /usr/bin/python be python 2.
The fact Python 2 has been well supported because the community cares does not make it modern, nor recomended. Just like I wouldn't call php 4 modern, nor recommend it over php 5 or 7.
And the reason you don't see that for ruby or node is because their community said "move or die". And many, many projects just died. I've seen the graveyard in the corporate world.
