This holds up if you imagine the profiling as done by humans. However, neural networks already surpass human ability in some computer vision tasks. The features the trained models come up with can go way past what we might consider visual likeness. The algorithmic method might eventually become 99.999% efficient at racial profiling with the help of something as ridiculous as fingerprinting eyebrow strand distribution & orientations. The right way forward is to fully consider the ethical implications when shaping these policies, regardless of technological ability.