I also think a lot of advice on that website is terrible, but there are some good bits there, too. For example while the general advice to never use bottom-up p

I also think a lot of advice on that website is terrible, but there are some good bits there, too. For example while the general advice to never use bottom-up programming is awfully wrong, there is some value in the example they give later - the one showing it is good to have a working version of the system as early as possible, even if it has many gaps.