No one said Ward shouldn't fight Kovalev, he should! But once he goes up in weight, it's going to be hard to come back down. If you look at the Light Heavyweight division, other than Kovalev, there really isn't anyone there. Most of the big fights are at Super Middleweight so it's kind of hard to say he should go up. Super Middleweight division is starting to grow again with guys like Degale, Dirrell, Groves, Froch and JCC Jr. Even Adonis Stevenson isn't a true Light Heavyweight. He went up to fight Dawson and just happen to strike lightning on his first try.
But again, Ward isn't calling out Kovalev but GGG's camp constantly calls out Ward. Either you want the fight or you don't. But don't go around and say you would knock Ward out and then when he's ready, you back out. I notice that when I gave you some evidence of GGG's camp calling out Ward, you have no response. Usual tactics!