You have proof of this?No. "Disparate impact" is legal voodoo created where evidence of discrimination is absent.Again, you have proof of this?When actual evidence of discrimination exists, "disparate impact" isn't used.
In United States anti-discrimination law, the theory of disparate impact holds that practices in employment, housing, or other areas may be considered discriminatory and illegal if they have a disproportionate "adverse impact" on persons in a protected class.
Wikipedia has a substantial bias to the left and should not be trusted on issues such as this.
At least the part you are quoting is omitting a very important aspect of it: A policy may be seen as discriminatory if it has a disproportionate impact and adds no meaningful value to those doing it.
Thus, for example, height requirements on jobs where there's no actual need to exclude short people--it used to be a common dodge to keep women out.
Furthermore, this only applies to a policy. It says nothing about reality having a disparate impact.