I don't think it's particularly misleading; if you look carefully, he's assigning 11 bits of entropy for each word in the passphrase, in other words, choosing f

I don't think it's particularly misleading; if you look carefully, he's assigning 11 bits of entropy for each word in the passphrase, in other words, choosing from a list of 2048 common words only. This is probably quite close to what a brute force passphrase cracking software would do as well, and he's not even adding bits for common alterations, such as capitalisation of first letter(s), spaces between words, common substitutions, etc. So the 44 bits estimate is for a software matching exactly this pattern, using exactly this common English dictionary. Also, I suspect throwing in a single word from another language would greatly increase overall strength, especially if it's an uncommon word.