Realistically every instance can monetize in whatever way they see fit but I highly doubt this'll be a thing. Mastodon is way bigger and more expensive than Lemmy and it runs just fine through donations. No reason why the same won't work here.
Lemmy itself is also likely to follow in Mastodon's path by getting money from sponsorships and fundraisers. See https://www.investopedia.com/how-mastodon-makes-money-7482865
Honestly it seems fine to me. The gains are small enough that it probably won't be worth doing on most ice maps because unlike in the vid, most ice maps aren't a straight line. Ice wiggles aren't usable on turns.