The conditions to kick any objective that it isn't in your deployment zone are very hard. You need to be very close to the objective, and if you covered all the objective it is very hard, or impossible, to kick it. The problem is, as the opponent of a SoB, he won't care about objectives and you only think to maintain distance and kill my Gargants. In that case, you are gonna lose in a lot of games in a few rounds.
I think it is fine if as a player, I try to win the game capturing the objectives, in consequence, my opponent must lose if he only wants to kill things.