So my impression is this: in a vacuum, if everyone hired only minorities, then non-minorities would be at a disadvantage, instead of minorities being at a disadvantage. Your argument seems to be that since there is still so much discrimination against minorities, some companies only hiring minorities serves to make the job market as a whole more fair for them, by "balancing out more" against those who only hire non-minorities. If those companies "only" treated everyone equally, then everyone else only hiring non-minorities would have even more of an impact, and the job market would be even more unfair for those minorities. Do I understand you correctly?

(Also: sorry for constantly using the term minorities/non-minorities. I don't have a better word to use here. I know talking about things this way could be seen as being part of the problem.)