You just disproved your own point. If us communists can own iphones under capitalism and still be communists, then anarcho-transhumanists can modify themselves under capitalist-transhumanism and still be anarcho-transhumanists. As long as you support the equal distribution of technology, then you still qualify as an anarcho-transhumanist. Capitalism giving you more than others because you were born middle class in the West doesn't change that.