Just because the technology isn't explicitly designed as a 'single out black people' machine, doesn't mean that it isn't disproportionately affecting them due to how it is being used. Just because this imaging technology can't tell the difference between dense hair and explosives does not make someone's thick hair, or hair covering "an area of suspect density" that should automatically be flagged for more invasive searchs.

It's definitely trying to split some really fine hairs to be saying 'actually, it isn't discriminating against black people, it's discriminating against hair types that are highly correlated with being a black person, and it's totally acceptable that people with those hair types should be considered suspect / subject to further scrutiny', as if that is some sort of edge case that couldn't have possibly be thought about beforehand.

I absolutely don't think we should be defending a tech / procedure that only seems to be negatively affecting people, costs millions, and doesn't seem to have any positives effects,