i think it should be
True Neverclick, and Beyond!: Have 200 or more of at least half of your buildings, the rest must be 100 or more -- without ever clicking the cookie.
in this case it means five buildings you must have 200 of, and the other five you must have 100.
if another type of building is added then six of them you must have 200 of, the other five, 100.