Did you realise that this article is the author's notes on someone's else's book? Have you read that book? Does either actually take the absolute positions you

Did you realise that this article is the author's notes on someone's else's book? Have you read that book? Does either actually take the absolute positions you appear to be criticising here? I didn't get that sense from them personally - more that the book presents some ideas that come from the mindset of functional programming and can be useful elsewhere as well - but YMMV.