I teach online advanced-Python programming workshops every month. The audience of each is 50-100 working developers from around the world, every one of whom use Python in their day-to-day work.
I start each class by polling who's using Python 2 vs. Python 3. A year ago, about 20% said they use Python 3, 80% Python 2. In the last 2 months, it's consistently 60%-70% Python 3.
Python's community has already plowed through the sigmoidal inflection point to 3; most just don't realize it. The linked article is years old.