I think it's less that someone "can't get over Python 2.7" and more "why should I?". Nothing in 3 except bytes/string handling is compelling. Lots of 2 libraries haven't been ported. There is no legal reason to move and no other time pressure.

I would argue that people have been "getting shit done" with C for decades, despite newer shinier flavors of the month popping up, so your argument doesn't hold water to me.