I think the (not clearly stated) intention is for an automated way to detect the pubisher's explicitly preferred method of compensation. Which is a sensible request, since it can allow a browser button/extension that sends you there with the click of a button, rather than having to search the page (or a video) for a mention of it.

Though in my experience, publishers and creators make it pretty easy to find that information, so the use of this tech would be very niche.