0/10 Just Plain Bad
Straight, white, cis man writes self-indulgent and philosophically bankrupt piece of nostalgia porn featuring racist, sexist, and homophobic ideologies.

For a good SF book written by a white man with similar-ish SF tech, I would recommend:
-An Absolutely Remarkable Thing by Hank Green

For all around excellent SF to get the homophobic/sexist/racist taste out of your mouth:
-The Space Between Worlds by Micaiah Johnson

For hard SF:
-The Quantum Magician by Derek Künsken

For thrilling SF that is a great catharsis for releasing anger (with a satisfying ending):
-The Echo Wife by Sarah Gailey

Please value your time and read something other than this book, see above suggestions for a valuable use of your time.