What do you imagine would be in the Tome of Freaks?
The recent attention being given to Kobold Press, reminded me that they have been quite successful of late; with Tome of Beasts, Tome of Beasts II, Creature Codex, and Creature Codex II. All of those titles are stamped "5E" on the cover, because WOTC won't allow more specific language in reference to their RPG.
Having a Tome of Freaks, or a Freak Codex; would be a way to give the SJW collective, a piece of our mind.