Talon and LB got their silence removed because it lacked counterplay. Meanwhile Chogath....
That silence hitbox silence hitbox and duration is ridiculous. He can silence your whole team, knock you up and then eat you for 1000+ true damage. Totally balanced. If talon and LB got their silence removed for being able to delete people without resistance then Chogath should too or the very least reduce the range on that silence.