This news article is badly written, and doesn't tell to us why this leak is a bad news at all. That fingerprint sensor is in the best possible place, which is the same as in my Nexus 5X and Nexus 6P phones. I'm not a Apple fanboy, I don't own any Apple devices, and I don't think I ever will. Still this stinks like a null information click bait article to me.
TL;DR: Nothing to see here, iPhone 8 might use traditional, best available location for a fingerprint scanner.