Aren't you moving the goalposts a bit here? Earlier you said we will be completely blown away at Gamescom, now it's maybe dependent on UE5 in 2022 (presumably we wouldn't see the results until quite some time after they first get access to UE5).
For one thing, cut scenes don't have to play on mobile, so while you are assuming that this disparity implies that they weren't ready to present the game, it could also just be a consequence of technical constraints. I think you are vastly underestimating the retarding influence mobile crossplay will have. Do we know how many other triple A games support crossplay between consoles and mobile? The only major titles I can find are Fortnite, Minecraft and Hearthstone. I've seen people talk about Call of Duty and PUBG as other successful examples of crossplay, but that is actually not the case (with mobile). I did find it funny that there is technically mobile/PC crossplay on CoD:Mobile but you have to use a mobile emulator on your PC, so you are basically just playing the mobile version.
From what I've read the crossplay experience on Fortnite isn't even that great, and you'll typically have mobile players sticking to their own lobbies. Still, the visuals, animations and simply the format of the game in Fortnite are well suited to scaling (especially since they aren't that demanding to begin with), which is pretty much the exact opposite in football games where there is vastly more complexity all competing for hardware resources. Some people are still hanging on to the fairy tale that you can have a fully next-gen game that supports mobile crossplay, but you can't and that's why Fortnite is the only game that has implemented it. Gamescom will show us a tweaked version of New Football Game, don't say you haven't been warned.
No one, which is why it made no sense to begin with, it's never been done and it never will be done. It was just a rumour by the "insider" on Reddit that's already been debunked by Konami themsleves in the Twitter Q&A, why are people even still bringing this up?
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