It’s clear you just want to be heard but that doesn’t prove that’s what happened to your application

“assumption” doesn’t imply a lack of truth, it points out your inability to know that out of all possibilities, which possibility applies

it means there is no point in doubling down on your data point of 1 in 1 niche industry when there is this other industry wide practice occurring as well

an industry wide practice that would affect minorities applying as well as existing employees alike