You can save the 15 bucks. Chances are pretty good that you've heard it all before.
Walt Heyer's book meets the definition of pulp fiction. In spite of Heyer's self-righteousness, he has been known to fib from time to time.
In case you are unfamiliar with the name, Walt Heyer is a noisy ex-trans person who found Jesus. These days Heyer is trying to convince people that no one should ever transition. That is how Heyer makes a living. That is also a defense of his conservative Christian faith.
Heyer had surgery about 40 years ago. Heyer has no training in medicine or counseling. His statements demonstrate that he knows nothing about gender dysphoria.