Stanley is NOT gay. He just has a performance side to him (flamboyant and such) born of his era. Those of my vintage know of what I speak.
As far as his muscularity, at various times throughout the years he has obviously weight trained. Look at the photo of him on the Crazy Nights album (‘87).
Thin but muscular. And very hairy. Haha.
The pic in the OP IS him, no question. Not even an argument.
Gene and Paul ARE KISS. Even though The Starchild has some political views and opinions I vehemently oppose, he’s a rock legend, and I totally dig him. No homo.
Peter and Ace are legendary fuckups. They’re classic elements of the KISS story, but considerably embarrassing asshats. Ace had a spark to him, but he derailed as a human in the later seventies. Certainly his playing stalled, and, ultimately, regressed.
A lot of fuckups in the KISS story: Vinnie, St. John, Bob Kulick, etc.