The wishlist effect (so many still unused unique typings dumped all at once and all the new evolutions to old mons in particular) kill this leak the most for sure. But what catches my sperging eye is the naming convention present throughout this "leak."
While many Pokemon names are just two common English words glued together (if even that, you've got even lazier ones like Seel and Golem), it's far from universal and certainly not enough to fill an entire regional dex. There's plenty of instances where extremely obscure words, different languages, suffixes and meanings are meshed together into something unique, regardless of translation. But here every name is just a common everyday English word slapped against another with no finesse. And that's even before getting into the blatant dead meme names, like "Swaggot" (some may point to Litten, but "lit" is a normal word that was simply turned into a meme, swag on the other hand has always been a meme word).