Really? I thought it was biased toward native USAian speakers. What the fuck is Cilantro?

Technically that's a bias toward Spanish speakers too, since cilantro is just "coriander" in Spanish, usually referring to the leaves.

Technically examples are biased to the specific examples given though they aren't supposed to serve the particular examples in particular.

Coriander leaves.

Does this not have its own word in British English? Even given their international cuisine?

We generally just call it coriander.

"Biased" in the sense of correlation, yes.

Or people with access to a computer and the internet.

He addressed that in the heading text: "This is obviously not going to be a real random sample of people"