Even without this ruling, Apple was willing to let Fortnite back if it removed the alternative payment.With this ruling, Fortnite is technically back allowed in the app store even if they want to use their own payment method (as long as Apple restores their dev account). That's all they SHOULD want, and it's what they got. Anything else is just desperation.
Even after the judgement, Fortnite will have to remove the alternative payment within the app to get back into the app stores. Only difference now is that, they can provide a link to their website, that takes the player out of the app and into the browser for the alternative payment.
Anyway, epic’s motive for this was something else.