You know, I was pretty grumpy earlier today, but I'm taking a deep breath and reminding myself that this isn't the end.
Smash has been doing amazingly. There could easily be more DLC on the horizon, and it looks more likely than unlikely. Things could always end at the first (and therefore only) pass, or it could go above and beyond. Sakurai stated he wanted to do as much as he could with Ultimate. The Switch has a long life ahead, so we'd not even get a Smash 6 for a long, long time anyway, whereas Sm4sh was at the very end of the Wii U's life cycle and didn't sell as well. Miscellaneous, individual DLC is being noted as a separate thing from Fighter's Pass, and we don't know if it'll be just PP that'll fit that bill. That gift option in the Ultimate menus still has no detail on it and has been left purposefully ambiguous. Nintendo has been putting Geno hugely on the forefront lately, even if mainly in promo images and other stuff.
I don't think it's the end for him. We really can't give up, or he definitely won't happen. Even if Erdrick is revealed tomorrow, we can't stop our voices. We need to keep the support alive.