What I hate about him is how he's a total suck-up. He wanted to be the heir himself, so he acted like a perfect child to get what he wanted. I imagine that he went behind the scenes to his dad to try to convince him that he would be a better icon for the company. His smugness also kinda pisses me off
I still don't think Jacques is quite as bad as everyone is making him out to be. Yeah, he's pretty bad, and it's clear that you're supposed to hate him, but he's not super awful. He's certainly no Ragyo Kiryuin or Gendo Ikari.