I think this relates to the old Jezzie meme of “Ariana Grande is a baby.”

Breeding, eggs, and trading. Other folks will breed en masse their starters and put them up on the global trading system. If you can find someone either online or in person to trade you an egg of their starter, you’ll have OT Trainer ID. You can also breed any breed-able pokemon (including starters) you come across…

But, like, there aren’t even gyms in this one...