Removes the statutory office of the Department of Defense Chief Diversity Officer and forbids using federal funds to create a position that is the same as or substantially similar to that Chief Diversity Officer role or the Senior Advisor for Diversity and Inclusion created by the FY2021 NDAA. The law repeals the statutory authority that created the Chief Diversity Officer and bars obligation or expenditure of federal money to establish those named diversity-related positions (or their equivalents).