The latest versions of Star Wars and Star Trek have both drawn complaints from conservatives, with cries of SJW! AGENDA! PANDERING!
OMG HILARY! OMG KATHLEEN KENNEDY!
I cannot understand why some conservatives act as if this is a NEW phenomena.
Star Trek was about a socialist, utopian society that flew around space preaching equal rights. For its time it featured one of the first interracial kisses, showed a multi-cultural cast as equals, and was created by a proud atheist.
Star Wars was created by a super liberal who was anti-athoritarian, anti-fascist, and despite becoming one of the riches people on the planet, anti-lobbyist driven capitalism. Star Wars says over and over do not trust politicians, and that a conglomerate of races is better than the fascist empire of British colonizing white dudes.
Outside of Heinlein and Orson Scott Card, most literary sci-fi has been progressive and used as an allegory of social injustice. Even stories like 2001 or Frankenstein which tells us man should not wander into God's domain place the fault on the hubris of a humanity not ready for that burden, which again-- is a social commentary.
By and large, sci-fi is a genre that is pro-science, pro-equal rights, anti-bigot genre whose ideals seem pretty contrary to what a lot of fundamentalist conservatives preach.
At the very least, you'd think the moderates in for the entertainment factor would at least learn a lesson here or there.
Interesting question, and not sure there is an answer. These may not be answers, but here are a few things to think about.
First off, sci fi fans are predominantly white males. Always has been. Yes, sci fi has become more inclusive and you have a lot of female fans or non-white male fans, but still sci fi as a genre is dominated by white male fans. Not making a judgement on it. Just the way it is. But politically and statistically speaking, white males are more likely to be conservative than many other groups. Given that, there will always be a percentage of those white males will be sci fi fans, and conservative. Even if you are only talking about say 25% of all white male sci fi fans being conservatives, that is still a lot of fans.
Second, I think we are living in an era where being conservative is counter culture in a way. We've had nearly a quarter century of this where this was in the making. You had 8 years under Clinton which gave rise to conservative radio and media. Then another 8 years of the Bush presidency where many current millennial sci fi fans came of age . I believe to a point, the era of the war on terror, sowed seeds of conservative group think under the Bush years, that we are seeing now. While Bush may not have been a popular president, many of the policies followed by conservatives were and still are. Then finally, there was the Obama presidency where the left's positions were criticized by those on the right, and Obama was proved to be a mediocre and polarizing president that enacted many policies by presidential order, rather than through congress. This gave rise to a time where conservatives act as counter culture, and which is why we have Trump as president, now.
Conservatives are far more vocal, at least from my perspective, and it seems they are more vocal now than at any other point in my life (you can probably again thank conservative radio and media, which encouraged conservatives to become more vocal and to be willing to get in the face of progressives). So based on all that time, you have sci fi fandom, namely those who are conservative millennial sci fi fans, who end up being critical of Star Wars or Star Trek, and sound like little Sean Hannities or Rush Limbaughs when they do it.
Related to both points, I think there is a certain percentage of conservatives calling themselves sci fi fans who aren't actually fans, but see an opportunity to stick it to liberals, namely Hollywood in particular. Maybe they are opportunistic youtubers. Whatever the reason, right now, railing against the man means (in part) railing against liberals in Hollywood. Apparently there are enough of the actual conservative sci fi fans out there to keep these guys in business.