If you read the article then you would already know the answer to this question. They are using a blinding protocol so that the service that terminates the VPN is unaware of the identity of the user.

And yet this product is being built by an advertising company who's business model revolves around tracking your online activities to sell you to advertisers, which makes me deeply suspicious that there isn't some way using this makes you more trackable (by them) than using a different VPN