No for real though, those agreements can be that petty. From what i've heard, stuff like that is pretty common with modern game company storefronts. Companies want things bought on their platforms to stay on their platforms. For a while, Sony didn't even like accounts that were created on Playstion to be used on other platforms for games that had already been supporting cross platform. Fortnite was the one that drew a ton of attention to the issue back in 2018.
When purchasing Vbucks, Epic even warned players they'd have to charge them more to buy it on mobile/console than if they bought it through them directly because of the companies taking a large cut, so i imagine DE has to deal with the same mess trying to pay Tennogen creators. Trying to get anything purchasable on one platform to play nice with other platforms is always a legal nightmare.