i think people are moving goal posts on what constitute wheelsucking, so let me educate you
when nibali attacks and doesnt ask hindley to pull, thats not wheelsucking, when hindley caught carapaz and rode his wheel for a while thats also not wheelsucking, when nibali attacked first on the last climb and hindley closed the gap thats not wheelsucking either
you are just mad that nibali messed up by attacking first, everyone who watches cycling for a while knows whoever attacks second has a huge advantage
thats cycling 101, thx for coming to my TED talk