What Evans wrote was a memoir of sorts, although the reviews sounds like he blurred the boundaries between genres, another no-no in the publishing world. I think his whole approach probably screamed "unprofessional" at whoever he was sending proposals
He kinda had to blurr genres because he simply wouldn't have had enough of interest (given people are reading for his content, not his skill as an author and philosophical whimsy. Something I would submit they did with, say, Amber Scorah).
I mean there's been innumerable autobiographies whose point of interest was being a witness. The majority had far more than that to offer. If not the first, they had much to add from being on the Governing Body to working at Bethel, being a CO to missionary work. At the very least they were long time, committed JWs who lived through some of the Watchtowers biggest upheavals. Many were familiar with Watchtowers most influential protagonists with stories few can tell.
Lloyd was a provincial JW. Relatively young he'd led too average yet sheltered a life to be interesting or relatable. If the inner workings of a secretive religion were of interest, he'd been an elder for less than 9 months so the only judicial he had to report was his own. He'd left for the most pedestrian of reasons with the only points of interest involving a salaciousness that was Less "Carry on Vicar" and more "Jim'l fix it" (allegedly...)