People still ban him simple because he's still an awesome champ. His laning has taken a small hit but it's his ability to change the course of team fights if executed right. I've seen more game changers because of Zed than any other champ simply because of his ult downing the ADC sniping everyone in the back with his ult, shadow flashing away from danger, regrouping with his team, and getting about 1- the rest of the enemy team. It's not laning that I'm afraid of it's his team fighting hit and run tactics that get's me and my team murdered. Though this is the same for other champs I just feel Zed can move around more freely than others. He doesn't need an ally unit to flash to safety, his ult nearly always drops pursuers if they're missing about 65% to 75%(50 depending on Zed's build and if the enemy is a squishy or not) of their health and gives him time to get his shadow flash to cd. Personally I don't play Zed but I love fighting against him. I don't think he's that op as everyone says he is, but he does have a presence of fear when you have to face him. There are ways to counter him whether it's getting the right champ, good ganks, or just simply counter building him. Instead of asking for his stats to get lowered so you can trade with him more easily spend your time trying to beat him. Try different champs, tactics, or builds. No champ is so powerful s/he doesn't have a weakness. You just need to find it rather than just trying to out power him.