The key is in "expected". Why did someone expect another person to be of a certain color? Note that the person in question is named Benjamin Cruz, and has a skin tone more or less consistent with their name [1], and not especially dark.

So the question is why the expectation of "being white" was there. A reasonable interpretation (with limited knowledge, of course) is that they expected Cruz to be white because they expect mostly white people to be hired at their level. That is clearly racism, as you're attributing intelligence to race.

Of course there are other interpretations, but I wouldn't say that 'you should seek help if you see racism' is helpful at all.

1: https://www.nbcnews.com/tech/tech-news/google-advised-mental...