> The more general python command should be installed whenever any version of Python 2 is installed and should invoke the same version of Python as the python2 command
Rather than permitting python to refer to python2 during a transition period, that is the recommendation. They later state
> It is anticipated that there will eventually come a time where the third party ecosystem surrounding Python 3 is sufficiently mature for this recommendation to be updated to suggest that the python symlink refer to python3 rather than python2.
> The more general python command should be installed whenever any version of Python 2 is installed and should invoke the same version of Python as the python2 command
Rather than permitting python to refer to python2 during a transition period, that is the recommendation. They later state
> It is anticipated that there will eventually come a time where the third party ecosystem surrounding Python 3 is sufficiently mature for this recommendation to be updated to suggest that the python symlink refer to python3 rather than python2.