The author makes a lot of strong statements based on their opinions. I wrote a bit about their dynamic/weak typing gaffe in another top-level comment.

> lambda closure

Just FYI (not intended to be mean or anything), in formal PL theory this phrasing doesn't make sense. A closure is the pairing of an anonymous function (a "lambda") with an environment. Python's "lambda" is really just a lambda --- it is not a closure. This is revealed in the common pitfall where you try to create a list comprehension using a lambda to generate interior values.