I don't think the article was implying there was anything wrong with it. Just a curious tidbit that one of the first big companies to use production code in Pyt

I don't think the article was implying there was anything wrong with it. Just a curious tidbit that one of the first big companies to use production code in Python was Microsoft. Also, programs written in Python are not subject to Python's licensing terms so there's no violation there. That would only happen if they modified the interpreter itself.