Do you normally use comments when you code or did you just do it for the tutorial?
I use the triple slash comments everywhere in production code (real code). They can be really helpful not only for those coming later but also for those reading the documentation (since these comments can be exported into documentation files – they also make intellisense better). I also leave comments in the code wherever I create “tricky” code. Code that is not easily understandable at first glance. I do not comment every line or even every section but at the very least, every method has a triple slash comment above it.