A post from a few/several months back helped point out that post the early to mid 2000s anime hype train resulted in a sizable but small fraction of disillusioned anime fans either upset that Japan wasn't anime sex wonderland where okama and yariman roamed the streets or burnouts who lacked the effort to understand the cultural exchange side of things and eventually "grew out" (ie trend sought other things) of anime entirely. On the other side of the spectrum, as I've pointed out, you have nostalgia wallowing bitter losers angry that Japan dares to have trends and changing tastes of their own, and we all know that they're occupying the workforce in "anime journalism".
Time went on to show us that these people were just posers who are fickle dipshits easily lead on by local and national moral hysteria and have a regret of anime fandom days only because they thought it was cool, rather than from a thriving industry and community of artists and creators from another nation that achieved what the US animation and comics industry should have been, and respecting their side of the human condition. Ironically, SJWs arise from the same problems that plague Baizuos, slacktivists, and faux-progressive minded people, being pinheaded and narrowminded self righteous socialist and one sided self proclaimed philantropics who have never left their country let alone their computers, yet still read up on "Wacky Japan" articles because their self pity and self hatred of whitey makes a fine excuse to be closet racist hypocrite douchebags and never find true moral absolution, nor truly challenge and fix the faulty parts of the foundation of American society.
Well, that and actually practicing cultural appropriation through really shitty tumblr art, writing over canon with their own fan fiction in their delusional little world, and consistently practicing uninspired fanwhore consumerism as they did in the 90's when anime got big in the states.
So to answer your question, teenagers are very impressionable, especially by older fans, and this also goes for a lot of the anime fandom as of current. So.... Somewhere inbetween authentic and inauthentic, and most definitely by a combination of their own lack of self awareness, awareness of how anime is not just not representative of reality but their own nation, and misinterpreting and projecting their beliefs into the shows they watch as a sort of self righteous chuunyoubi echo chamber. The cultural appropriation contradiction paradox of how anime needs to always be made in Japan yet authentic creative inspiration derived from its viewing and enjoyment is warped and twisted in a matter of expressive suppression and ignorance is also one hell of a mindfuck. So I mostly blame both shitty fandom and a societal failure to properly diagnose and analyze cultural issues in the United States/the west.
I can't say that Japan has SJWs, but I can sure say that they have fujoshi. Even then, their cosplay community is known to do more feminine and sexy/bared skin bikini cosplays than I've ever seen here. So, the blame merely goes back to America for this, and why Netflix and Crunchyroll best watch where the fuck they dare to tread should they decide to claim what "we know best is for the American anime fandom", because they sure don't know until they get to R&D.
It's making my skin crawl, though.
