The point of the medical analogy was simply to illustrate that what works to counter one problem will not work to counter another problem that just happens to have the same symtom. So the analogy holds up well enough for its purpose.
Regarding star wars there was absolutely way more problems than just diversity with it. It still was part of it tho. On thing that is typical of an SJW story is to shove in one of the groups they want to represent, but then also to spare this character from hardship and to always be the bestest at everything (thus preventing character growth). Luke did a traditional heros journey and had to rely on friends and allies who had skills that he didnt. MaReySue was a failed character for being spared the levels of hardship failiure and then growth that Luke faced in his arc. Anyone who wants a more clear cut example of diversity ruining business need only look to the comics industry.
As for the legality of trolling vs making racist statements it ofc differes a bit from country to country. I live in a contry that accepts the UN declaration of human rights so this probably influences my thinking on the matter. Free speech is a human right, and imo should also be a legal right. Being shielded from someone behaving like an asshole is not a human right. I do ofc not think its good when people treat eachother in such a way (whatever their motivations for doing so are) but I do not view it as a matter for the law. At most it can be a matter of breaking some form of ToS for a game/service the people involved are using to talk to eachother.
