You are trying to argue that the people who claim standardized test is systematic racism is meritocracy and against affirmative action. Then following your logic, the people who aren't claiming standardized test is systematic racism is anti-meritocracy and pro affirmative action.

Yet the standard test does not differentiate the race of the test taker. If race was factored into the test scores somehow then what you are claiming makes sense, but the SAT/LSAT/MCAT/PCAT do not, cannot know the race or socioeconomic status of the test taker because as society we benefit from placing people of merit, who have the aptitude.

Are you comfortable with a lawyer/doctor who is responsible for you because they fit a certain affirmative action profile but scored low on their aptitude test and low gpa to meet a certain quota for that demographic group vs someone who were hired because of their high score on standardized aptitude test and consequently high gpa (that does not discriminate the test taker based on their race or socioeconomic class)?

Would you trust the latter or former if it meant your life/bank account depended on it and is it racism if you do not choose the former?