I would assume that's implied. A random guy can't build a car, design a building, or build a house and it would be silly to think they can. Likewise, a random person can't build a well-designed loudspeaker. That said, there are many DIYers who "actually know what they're doing."
My point is a competent DIYer can build a speaker that rivals the 8T while using an active crossover, any finish they want, any "sound" they like (accurate vs house sound), a very well braced and nice looking cabinet, and do so at a very small fraction of the 8T's asking price!