>>55223041>>55223013Another thing is that up until Gen 5, flying was only ever on a Pokémon with another type and even to this day that’s mostly the case. Most flying types can just use STAB from their other type so they doing really need Flying attacks
Also it could be a way to balance flying due to how good its defensively, immune to EQ, resists fighting, immune to most hazards, many even get roost. Even sits stealth rock weakness isn’t as bad due to many flying types getting defog.