Welp, can't say I saw this shit coming at all, but on the other hand, perhaps it was inevitable after Game Freak pretty much weaponized autism with pokemon already.
Seems this gaem's all about raising horses/pones to git gud at racing, all whilst playing solitaire and watching your pone become the best, until it eventually ends up becoming a shit and you have to retire it.
Then, once you have two retired pones, you can have them date and even breed with each other for new babby pones to raise and train. And they'll have tons of customization with how your pones look too.
To tl;dr this, if you ever wanted a pone game that legit lets poni be able to poni poni, then this is the gaem for you m8s. Also, Mama Bird is best pone.