>>57414967~100-120 (going with irl counterpart to its story) years ago Hisui had very rudimentary and archaic Pokeballs. We also know that in the ending some of the Hisui imhabitans, curiously mostly representing descendants of Unova characters, decided to migrate out of their homeland. Drayden is like 60-70 years old.
It's not far stretch of imagination most of Unova was a shithole. If we compare it again to irl timeline we talk about 50s-60s, countryside were shitholes.
I suppose it means that Drayden grew in one of these forgotten by God, little communities?