The actual issue is very simple. Shorn of all verbiage, North Carolina in a rapid-fire move passed a law that businesses must be allowed to discriminate in hiring, firing, promotion based on sexual orientation and gender identity. They added in a prohibition prohibiting raising minimum wage to appeal to big business campaign funders. Then they threw in an unenforceable "bathroom" provision in order to say this is not about civil rights or standard of living, they are just trying to protect the safety and privacy of cis-gender girls and women against the (nonexistent) threat of being assaulted by transwomen or men pretending to be trans in the ladies' room.
They acted against protests by activists, the universities, the business community and many faith leaders. They lost millions as entertainers and conventions went elsewhere. The NBA among others urged a repeal or "fix". So the state announced a "fix": the discrimination provision would stand, but transgender people could use the restroom of their true gender provided they displayed a medical certificate attesting that they are post-surgical. Not only a total invasion of privacy, but again unenforceable. To whom would they be required to show this certification? Apparently, to anyone who demanded it. But how do you know if the person in the next stall is transgender? You don't.
So the NBA did what numerous other businesses did. They have a non-discrimination clause that would be violated by holding the ASG in North Carolina. They left.
Unfortunately when anything involves gay people, the usual suspects, with zero knowledge and zero interest in learning, parade their particular prejudice as what "nature" or their god wants. Considering the way nature behaves, it would be laughable were it not the basis for so much bigotry.
The words homosexual, bisexual, transgender are of recent vintage but the behavior is older than humanity. What we now call homosexuality, bisexuality, and transgender has existed in every known human society, past and present, even the most repressive. Even when faced with burning at the stake. Today still, gay, lesbian, bi and transpeople are tortured, murdered, imprisoned, raped - and while they can be terrorized into the closet, not one person has been shown to have "turned straight".
What we call homosexuality, bisexuality, and transgender exist in every animal species studied, although prevalence varies between species and between genders in a species. Among black swans, por ejemplo, sexual contact between males is very common but between females quite rare. Black swans may seem pretty removed from us. But bonobos share 98% of our DNA. About 2/3 of the males and virtually all females are what we would call in humans bisexual. Males orally copulate one another, females rub their clitorises together, adults caress juveniles' genitals. They reproduce, of course, but also use sex for celebration, for example, if they find a very rich food source before eating everyone in the group has sex with each other. They use sex for introduction; when two groups of bonobos encounter each other, they all have group sex. Sometimes an individual, usually young female, leaves one group to join another. She introduces herself by having sex with everyone in her new group. This is not gang rape, the female initiates and clearly by facial expression, verbalization and body language is enjoying herself. They use sex to defuse conflict; sometimes young adolescent males in excess of testosterone get into squabbles, which are broken up by mature females. The would-be combatants then make up by caressing and licking each others' penises. I always thought that would be a good way to settle scraps in NBA games. (OK, LeBron and Draymond, center court...) If someone were to tell them their behavior was not "natural" because it was not "injection of a penis into a vagina for the purpose of reproduction", no doubt they'd reply, "Cousin, you're seriously crazy!"