Being proprietary closed source software, Matlab is unsuitable for most practical uses; but if it's good enough for your "serious" tasks you are welcome to use

Being proprietary closed source software, Matlab is unsuitable for most practical uses; but if it's good enough for your "serious" tasks you are welcome to use it. On the other hand, recommending Matlab for interactive web demos, which require using Javascript and redistributing your machine learning "toolbox", is absurd, not merely "grumpy".