That's what I see in the article body, but the <title> tag is "Wearable device makers are harvesting brain data to train AI—without telling users" for me. It's not clear to me if the submitter changed the title on submission or if the site's doing some form of A/B testing.

This is an extremely common practice among publishers. They put a more SEO friendly headline in the <title> and I'd say the "real headline" is always in the <h1>.