Homosexuality is defined by one’s behavior. It’s not an inherited characteristic like skin, hair or eye color.
Yes. Behavior is malleable. One’s genetic code is not.
In other words, one can adapt behavior. One can decide not to do something anymore. One can’t stop being black, or green-eyed, or being the physical height they are.
And personally we are not just talking about behavior that is on the same level as having a cup of coffee in the morning or not. It is extremely high risk behavior. It is dangerous behavior. It is medically dangeros behavior. It is still behavior regarded my the large majority of people to be personally offensive and repulsive behavior.
It is not just the same as what car to drive, or what school to go to, or what shoes to wear. It is not neutral behavior. It is very negative behavior.