>>14184290People shit on Matlab because either they don't know how to use it, or because their subject matter doesn't warrant it. Matlab is a good introductory language for deep learning, signal analysis, pdes, control theory, and genomic/protein analysis. Anything beyond introductory might as well be done in c or scipy.
If you need it, or want to learn, r2021 is on PirateBay - all packages included.