"Why hasn't this Kanto event increased spawns for all Kanto pokemon?"

#PokemonGO: the pokemon that I have seen everyday for this event are: growlithe, magikarp, gastly, machop, geodude, ponyta, diglett, sandshrew, rhyhorn, seel, grimer, meowth, doduo, poliwag, all 3 starter pokemon and oddish.the only rare spawns that are commonly reported in my discord are chansey and lapras. where are the snorlax, or aerodactyl?Where are the cubone, exeggcute, horsea ekans, onix, pikachu, fossils, hitmons, psyduck, slowpoke, drowzee, krabby etc.I get some of these boosted pokemon have shinies released, but how can they call this a Kanto event if not all of the Kanto species are boosted by this event??? via /r/pokemongo https://ift.tt/2zA5fQ6