I don't know man. They never specified what rules the fight was going to be under or anything and I highly doubt the kid worries him to much in straight Boxing.
The whole deal is pretty weird but I kind of believe Floyd was dupped here. The tickets for this event are already sold out and Rizin is getting the most attention it's ever gotten, they're just using Floyds name for attention like the UFC has been doing for years, nothing to see here really imo.
EDIT: Oh and isn't Ariels whole theory here based on a cheecky tweet from Rizin? Lol. (I admit I didn't watch the video, my tablets a pos and they take forever to load.)