Bro his shytty credentials was subtext for his race. This movie came out during the height of affirmative action where everybody black was considered subpar.
The scene was trying to convey that this expert witness was lacking in his credentials, and that it would impact the trial negatively. I don't believe it was meant to make a statement about affirmative action. Had that character been certified in all those things they were asking, his race wouldn't have been a problem.