This post's scope was about an ML library in Python. There was in fact no such argument made about replacement of any other much more evolved project like Weka

This post's scope was about an ML library in Python. There was in fact no such argument made about replacement of any other much more evolved project like Weka, Mallet, etc. But still, thanks for bringing forth the fact that there are much more sophisticated libraries/pkgs that exist, though in Java, but can be used with Python. Which is actually true for any Java code, i.e. it is accessible in Python, I use JPype for it, among the few other available options for the purpose.