This is a pure political decision based on ideology.
Official support will be dropped by 2020, by then you will be relying on the community (who ?) to provide bug and security fixes. I'm not aware of anybody stepping up and declaring they will take over maintenance.
At this point, insisting on python 2 is the ideological "side". There's no practical nor realisitic reasoning behind it. Major parts of the community are moving to python 3 and dropping python 2.
You can stay with python 2 and maintain the language / libraries, but don't begrudge those that move on.
I've plan to migrate away from py2 by 2020 too, just not to py3.
If you feel you have "plenty of resources" you can fork the python2 version of numpy and maintain it.
Aside from what others have said, NumFOCUS is woefully underfunded. If you're interested in seeing continued development of NumPy and other amazing scientific Python packages, you should think about contributing!
(Not a NumFOCUS person although I occasionally volunteer with them and definitely donate on a recurring basis.)