Anthony Burdge said this quote

“ Cabinet is a conscious, explicit attempt to portray the Doctor himself as myth. “He’s a mischief, a leprechaun, a boojum,” says one character, bookseller and collector of incunabula, Syme. “The Doctor is a myth. He’s straight out of Old English folklore, typical trickster figure really.”29 Neither part of an ongoing narrative, nor specifically located within the series’ past, Cabinet is in a position to challenge the portrayal of the Doctor. ”