Nerfing IBG but not Runic Echos

Nerfing IBG because it is too strong on some champions and some champions abuse it (cough cough ezreal were looking at you). But when it comes to Runic Echos, you're nerfing the champions instead of he items, such as Udyr, so now pheonix stance is unviable, and his tank play style will do 0 damage throughout all stages of the game, not just talking about the Runic Echos build here, he can't go cinderhulk anymore, because he'll deal absolutely no damage and do even less than the minuscule amount of damage he did late game, even with runic echos, not to mention he's going to be doing even less damage because of the IBG nerf. Why not tone down the movement speed to 5% on runic echos, or the mana passive, because it gives too much utility as is.