You're arguing personal anecdote (experience) against another one. Which is exactly what this article was about. While you cannot point to one person who belong

You're arguing personal anecdote (experience) against another one. Which is exactly what this article was about. While you cannot point to one person who belongs to a minority whos having some trouble and extrapolate that to the entire population of minority, neither can your counter example disprove the reverse statement. Logically speaking, one example of discrimination proves that "at least one person of this minority group is discriminated against" which leaves the stronger statement "many people of this minority group are discriminated against", while the negative (your experience) can only state that "not all people of this minority group are discriminated against", which strictly speaking isn't refuting the original point at all, since very few people are confident enough of their data to argue that all people of a minority are discriminated against.