I am 6’4 and I am baffled by that argument. Not being “discriminatory” against pilot height is not the most important design choice in an airplane.
What about a 7 feet tall person? Would it also be “discriminatory” if they can’t be a pilot?
But there is a pretty big difference between accommodating 93 percentile for men and 99.96 percentile, and that's only 5 inches in height between 6'1" and 6'6".
You know that how exactly?
Maybe that the case but if it’s not maximizing safety and minimizing failure risk (so by extension any unnecessary complexity) should be prioritized over any accessibility concerns under any circumstances