If Vox is right that Sci-Fi/Fantasy have been invaded by the PC police, it might be good for authors not totally in line with the commissars or fearful of being purged to look elsewhere. This isn't new as Bradbury mentioned this push for inclusion half a century ago. If another genre were to be built up and proven successful, don't worry, those leeches would worm their way in and ruin it within 50 years. It would be 50 years of peace though for the rest of our lifetimes. One would think in imaginary worlds it would not matter but >gulp< diversity uber alles. Let us think of other genres that would allow one to skirt the PC Nazis.
1. Historical Fiction - Speaking of Nazis, go back in time. With a history based framework, one can explain why women and men have more traditional roles or why certain groups are not represented or represented in numerically and technically appropriate ways. The Interwar Period has enough intrigue and stories to mine as does early stages of the Cold War. A serieson the tragedy of decolonization might be interesting. Mad Men, Downton Abbey and Neil Stephenson make good use of this trick.
2. Bronze and Iron Age Fiction - If you love fantasy, go back in time to a more tribal setting for humanity that resembles fantasy. You might be thinking Middle Ages settings, but the bastards will shove the foreign, 'other' warrior bullshit down your throat. Go back further and prior to the Roman Empire, which has somehow been tainted by some books, movies or premium cable shows as if the demographics of Rome were southern California. Hollywood types believe, because the Romans had the Mediterranean coast of Africa, that Bantu tribesmen were the majority of administrators. The Bronze-Iron Age allows for swords, tribes, odd religious beliefs and the ability for you to make up languages since there is a lot missing on them.
3. Post-Apocalyptic Dystopian Novels - Set the framework up where there is a reason why things are drastically different from today. One could even write in viruses that affected certain groups more than others or STDs that caused people to re-evaluate things and value traits that society used to strive to embody. Maybe to appease the PC gods, you make the disappearance of a group or an event part of an evil secret for the protagonist to discover. Reduce the number of people in total on the planet and this helps explain the lack of precious others.
4. All Robots - OK, so you can't let go of doing sci-fi or space stories. Use an all robot cast. If you make a robot a black or Asian robot, then you would be accused of racism (he wrote the robot to say "Dayyy-um"), so just use plain robots. This kind of hurts reader-character connections, but with the number of Aspies walking around, I think you will be fine.
5. Crusades Tales - I'm backtracking a bit because this will involve Muslims depending on which Crusade you select to use, but in these tales the Muslims are the bad guys. They have a real reason to be there, so a writer would use Muslims as a diversity shield from PC attacks. Women are involved, but women will be pilgrims not sword wielding 21st century, Joss Whedon created superhumans. Religion would be acceptable as a topic of character's conversations because that was the entire point of the Crusades. If marketed correctly, I bet they'd sell well with evangelicals. Side Note: After decades of watching Joss Whedon stuff, I think the guy has "sub" fantasies involving some really tough, petite woman killing people and then using him for rough, BDSM sex, calling him insulting names the entire time.
6. Pirate Tales - Now I am just being specific within the historical fiction genre like the Crusades tales. Yes, there can be diversity. Yes, there could be women pirates, but ahem, the reality is few i number scattered over the large oceans. Non-pirate women could also be in traditional roles. You can even sneak in religion due to the Protestant/Catholic warfare of the era.
Besides recommendations, here's a question: why the hell are Lady MacBeth types not adored by the feminists? Why do these pushers always want to see physically imposing, warrior women? Disregarding the entire catalogue of female monarchs, rulers and all-around dastardly ladies (Matahari) who did wield power, is rather lame but the way that modern progressives explain that today is always better than yesterday. Catherine the Great had her husband killed and took over Russia. Theodora and other women in Byzantium had tremendous influence and control of the empire. These women and characters based on them (advisers, schemers, soft power manipulators) are not enough because only chicks with swords slicing through orcs count as progress!