The diverse slate Approach'd criteria depended on the role. Ther are some roles where Asians are underrepresented so they'd count in that role. For tech, they're not underrepresented so they don't count towards the DSA.
Yes, Asians are overrepresented in tech. That's why the DSA is not fulfilled if an Asian male is part of the candidate slate for a tech role. The candidate slate needs either a woman or URM (underrepresented racial minority, AKA Black or Latin) in order to proceed.
If there's a different role where Asians are underrepresented, then an Asian candidate could fulfill the DSA requirement.