Onix is too rare for a 5 km egg and needs better stats

Overall, the game is pretty decent. My only issues revolve around Onix. The egg chart has been revamped and he was moved down to the 5 km tier, which makes no sense given how hard he is to find in the wild. And on top of that, his health stat is unnecessarily poor. You mean to tell me that something as large as Onix has a very low health pool? That doesnt make any sense. CHANSEY is a pre-evolved Pokémon and she has a massive health pool. Onix is also pre-evolved, and given his massive size and rock-hard physique, would it not make sense to give him a larger health pool? My message is simple: Onix needs a major buff.

King_Leonidas_of_Sparta about Pokémon GO, v1.31.0