Also, since we’re critiquing a cartoon critiquing a book (nope, no geeks here), that ‘improbably’ completely misses the mark. Of the things listed, Jenny-as-password is the one that actually exists in the real world; it was a consistent top 5 seven-character password for decades. Hard to complain about doing so here. If anything, it’s way too obvious.
Oo, if there’s a six-character one later in the book, maybe it’s Joshua!