I am a misanthrope and I want nothing more than to escape from humanity. Here I will explain how my Arkian ethnicity idea makes this possible.
I assume that the vast majority of humanity are worthless scum, but that there exists a small minority of worthwhile people. However as humanity continues to decay, it is only a matter of time before worthwhile people go extinct and humanity becomes pure scum. The only way to prevent this is for the worthwhile people to withdraw from humanity into their own ethnicity (culture, gene pool, etc.).
The requirements to be Arkian, explained here, are designed to select for the few worthwhile people. Let me reconsider these requirements from a misanthropic perspective.
The first requirement for joining is knowing the Old Testament or the Quran. Why? Degenerate modern scum hate traditional religion, so this mostly eliminates them. Anyone who knows history knows that the few good societies of the past had a religious foundation, so knowing a religious text means at least knowing this foundation. Note that there is no requirement to actually believe any particular religion, only to know what a religious book says.
So what are the possible religions of a misanthropic Arkian? The only (western) religion that is incompatible with misanthropy is Christianity because this religion requires you to love everyone. But you can be Muslim or follow the Old Testament or simply have no religion at all. All of these options are fine. But being Arkian means that you cannot be an ignoramus who doesn't even know what religion teaches in the first place.
The second requirement is skill at the game of Go. This requirement eliminates morons and people without the drive to develop a skill. Most modern scum talk and talk and talk and never do anything. To become Arkian, you have to pass 2 tests which proves that you are willing to do something. Eliminating the worthless talkers is critical.
The name "Arkian" is based on Noah's ark with the idea of saving the few worthwhile people from the devolution of humanity. Will this idea work? I think this question boils down to the question of whether there are any misanthropes out there who would rather solve the problem of humanity than just complain about it. If you are interested in this, consider joining one of my online Old Testament readings - we usually discuss the Arkian ethnicity idea after the reading.
Disregarding the issue of widespread racial impurity for a moment, the number those 'scum' who are actually pure and virtuous at heart isn't necessarily a minority. The problem, largely, is that their home and culture has been purposefully turned into a cesspit. Left in there, of course they will smell like sewage. Those on higher and cleaner ground ought commit to pull these unfortunate folk out of and away from the filth before they succumb to rot and are dissolved.
This seems secondary. The first step would be for the few decent people left to find each other and form a group of some kind. When that is done, they can try to improve others if they want. But the first step is the most difficult and urgent.