Because the shapes of portions of our bodies do not betray our moral character. It is nonsense, and debating this issue is so tiresome. I've worked in facial recognition for quite some time, and thank gawd nobody where I've worked had over-reaching opinions of our software's capabilities. For example, the "emotion recognition AI" fraudulently being marketed - we howled in laughter when those frauds appeared. However, while interviewing at other FR/ML companies, I meet a horror of over-reaching attitudes. I guess someone can work in trained algorithms and yet carry a head full of conspiracy-theory quality logical connections. That must be the case, because physical shape cannot dictate moral character, and debating the issue is Kafkaesque.