The community is not divided anymore. Anybody who knows wants to use 3. Anybody who doesn't is told to. The only people using Python 2 are now people stuck with legacy code base. It's an important part, but the situation is very clear.
So, just largest and more important part of Python's non-hobbyist users?
Like tensorflow - https://github.com/tensorflow/tensorflow/issues/1
I've just installed it using conda in Python 3.6 just fine.