Re: The Revised Starfleet Technical Manual/ Starship Enterprise (NCC-1
The FJ blueprints and TM are fully licensed tie-in products, and in that sense are official.
Official in the sense that royalties have been paid and no violence of copyrights has occurred. That tells us little or nothing regarding the value of content, which can simply be evaluated by what you actually see on your screen (and what not).
"The first duty of every Starfleet officer is to the truth, whether it's scientific truth or historical truth or personal truth! It is the guiding principle on which Starfleet is based! Jean-Luc Picard