Yes but how many of the people who these slides were designed for are people doing cosmos simulations? That's the relevant quantity. It's especially funny because the author's area of research is in cosmos simulations. :-)
A lot? I would guess the slides are meant for advanced undergrads or first year grad students in a physics program. ee how the math-y parts of the slides are pretty sophisticated (e.g., bessel functions) even though the programming part is pretty simple?
