I believe you are right. Honestly, I don't Mike is racist but the "Passive Attitude" that he can't think of any black founder - when he clearly knows some is kind of dishonest.
Tick tick tick DING! Time's up! Don't know any, huh? What about Mr Brown? Oh, so you DO know redhead entrepreneurs. So you're just being dishonest! Obviously, you're biased against redheads then.
It sounds just as ridiculous when you insert "black" in there.