I think you have it backward, or that this form is a minor gateway to the confounding correlation, which is that people already leaning towards the apostasy trajectory channel their hate for Islam by starting with indirect rhetoric, first obsessing about Arabs, secondly, associating Islam with Arabization, then conflating Islam in general with Arabism, then creating false dilemma of Somaliness with Arabization that Islam supposedly accompanies -- all to deliberately confuse separate things, attempting to reduce Islam as nothing more than an Arabian hegemonic homogenizing tool for the Arab, an invasive cultural warfare mechanism, rather than a religion from The Creator. These same people who are like this are usually staunch secularists who would invite Westernization.
Hate for Arabs is a way to drive the wedge to shift people's opinions, and it starts with an obsession with victimization and historical and cultural fabrications as well. If they convince people that the Arab is an antagonistic actor and detrimental to Somali existence, then maybe people can start disassociating with Islam, which they claim is their primal tool for Arabism.
These are cowards who move like serpents because they lack the courage to speak their minds. And these things are not mutually exclusive; they can be what you described and follow this mindset.
But you have another form. Namely, the unintelligent person with a severe inferiority complex that disproportionally fixates on Arab mistreatment of other people on quite a selective basis (as you will find racist treatment of people if you look for it eventually), and these fools often get used by the crypto-murtads above.
In truth, Arabs are not perfect people. They are not collectively our enemies, but they are often our friends, many of them are shitty, and many more are good. Like all people. Kinda like us, right?
You will have a Somali-hating guy from the New World (exceptions) pushing the same rhetoric about us, but none of these career Arab haters would call themselves an evil race of people because we do some fucked up thing now and then. You often see the anti-Arab being very racist towards other groups. It's often like that. The ugliness they claim others have is what they hold themselves.
Remember, some of these people have the least contact with Arabs among Somalis so much of their inferiority comes from ideas in their mind. Their flaws and sense of insecurity take shape and are attributed to others for instrumental reasons. This is a psychological argument for the fools, not necessarily the murtads. The miserable love company.
Arabs are our equals from a historical perspective. When you constantly obsess about them as if we were their slaves, it makes us seem lesser because some people can't do personal self-reflection. People need to exercise some self-respect and dignity. It's pathetic.