This is a toxic attitude as this can be said about pretty much any language / thing, "lol Ruby developers discovering what LISP developers have been doing since

This is a toxic attitude as this can be said about pretty much any language / thing, "lol Ruby developers discovering what LISP developers have been doing since the 80s", "lol LISP developers discovering lambda calculus", etc. A better attitude would be to appreciate that these solid practices are being rediscovered everywhere, and focus on the good rather than the "us versus them". It's not productive.