Generally it is a good advise, I found similar things very useful for me. I think emphasis on paper and one notebook is wrong here and likely will fail quite a bit of people who will try it. Also prescriptions like "They're very detailed" (i.e. notes) are IMO too rigid.

Start from wherever suit you, play, experiment and pay attention what works for you, adjust and iterate. Don't fixate on shiny concepts, i.e. "engineering notebook", and the "need" its records to be dated, etc. Try something, let it lapse. See if you are worse without it, then adopt it back. If you don't see the difference, so be it.