That's not the way to look at this. The control you would need to establish whether what you are saying is true is a world in which the 2/3 split never happened. And in that world Python is most likely doing even better than in this one...

They fucked up. That Python is resilient enough to absorb such a blow and that no other language is a viable alternative for that particular niche is what saved the day.

And even now there is still plenty to improve on, fortunately Anaconda at least makes package management more sane.