An Egyptian guy by the nome of Khakhepersenb complained about there being nothing to say that hadn't been said before, in a text written close to 3900 years ago. So even claiming this kind of stuff is old news.
I'll settle for things being new enough.
The thing was in fact explained in the first page about that strip, in one of the first comments:
There's no way that someone would miss the chance to explain something like this...
I agree that he could have been more helpful, but you're overreacting a bit. Let's keep this friendly guys.