I'd say it depends on what the newbie's end goal is. Because many people may use programming for higher level things - like using Matlab to process physics experiments' data.
Indeed, the intention was to make it easier to follow for everybody. Maybe I made a mistake :).
Also, I'm not a Mozilla employee.
Thanks for the feedback!
I'm just starting out on this road, so this is what I see right now. I'm sure my thoughts will become more nuanced and elaborated in time. Thanks for the feedback!