I mean, if the anime and merch are prioritized that much, couldn’t they just release the anime first and release the game 6-8 months later?
It's not a matter of priority, it's a matter of multiple completely different companies working on different projects, all of which are designed to launch together in one big wave so they generate interest in each other.
Imagine your from GameFreak and you want to delay the game. You go to Hasbro or whoever is making the plushes or toys. You say "Hey, some guys on twitter told us to delay our game, so we're going to do that."
You'd get a "Are you kidding me? Our entire holiday business plans revolve around these toys that your game supposed to promote. Not our problem your game isn't amazing, and we're not going to suffer from it."
It would devolve into an absolute war between multiple corporations between multiple different mediums and people would lose their jobs. For what? so some youtuber with a smug animated avatar with his arms cross stops calling GameFreak lazy? So some angry twitter user doesn't make another Change.Org petition?
In any creative medium there needs to be a balance between art and money. As nice as it would be, you can't just have the art, and the people who make the best art know that and know how to find that balance.
GameFreak can not delay this game. They don't have the authority to, and even if they did, they'd just end up ****ing over hundreds of other people for their own shortcomings.
I don't like it when people call gamers entitled for wanting a product to be improved, but if someone genuinely believes that a multimedia franchise THIS BIG should just stop in its tracks for over half a year because he/she isn't satisfied with some aspects of a game, and that if they don't they're just as bad as EA or Activison (who are literally in court for shady practices), that's a yikes from me.