Really nice! I wonder how you get the parsed recipe to load so fast, much faster than say outline.com (though they prob have some more server-side stuff going on)
Seems like not a new thing. Here is a warning tweet from beginning July from Danish Cybersec guy @peterkruse who saw his name coming up for a different domain owned by the same registrant as havfruen4220.dk
Their video course [1] is supposedly based off the book. In the course they state that they are not focused on (nor do they have expertise) in the "electrical engineering" aspect of computer systems.
In the first part of the course they focus on computer "hardware" but only on the logical aspects of it (i.e. logic gates etc.). So it probably is considered part computer engineering (though the second part does focus on software) but I wouldn't say it really overlaps with electrical engineering.