Although your tool looks more like Virtualenvwrapper.
It's good to have other options of course (and yours looks nice), but it's also good to at least make a case for improvement over what's already out there.
His attitude is very Pythonic. That's another thing I didn't like. Other languages let you write whatever you want (maybe to a fault, but still) and support you. This guy's all like "Python has venv and everything else is superfluous so why did you write this". Sigh.
Although your tool looks more like Virtualenvwrapper.
It's good to have other options of course (and yours looks nice), but it's also good to at least make a case for improvement over what's already out there.