>>46880348Lugia was created by Takeshi Shudo, the guy who directed the first season and wrote the Pokemon novels. It was created for the anime first and foremost. Debating canon in Pokemon is fucking pointless since it has multiple timelines, universes, and dimensions. It would make sense for certain legendaries to be breedable in-universe. The fact that legendaries can't be bred in the games seems to be of a gameplay limitation so that they can curb the distribution of legendaries so that "events" are more valuable.
Regardless, the anime would need an explanation as to how there can be multiple members of a particular legendary species since it can't use shit like "Tobias got his Darkrai from the Tokyo Pokemon Center event." Since the anime doesn't have to fall in line with gameplay mechanics, then it would make sense for certain species of legendary or mythical pokemon to be breedable as it is the most logical explanation of how multiple members within a legendary species can exist.