From his opinion for the majority in West Virginia v. B.P.J., allowing states to provide separate women’s and men’s sports teams defined by biological sex:
Some might ask: What is the harm in allowing an additional athlete to compete in women’s or girls’ sports? That sentiment, though understandable, misunderstands the nature and reality of sports.
Sports are highly competitive and generally zero sum. At almost every turn, someone wins and someone loses. Every athlete who makes a team takes a roster spot from another athlete. Every player who earns playing time reduces the playing time of a teammate. Every player who makes the starting lineup sidelines another who remains on the bench. Every competitor who wins a race or competition deprives another athlete of that victory, or medal, or prize. Every team that wins because of an added player means that another team has lost because of that added player. Every player who makes all-conference beats out another player who does not. Every student who earns an athletic scholarship takes that opportunity away from another student. And so on.
Women and girls who play sports care deeply about all of those things. They obsess about them.

Now, there's your nontoxic masculinity. Aim higher younger-than-boomer guys. I saw JD Vance's fuchsia tie at the debate last night, but there are miles ahead on the road to detoxification.