None of them have to play golems, they have good in faction cards.
The ramp is good but are you going to get it as turn 1 play every game? Probably not even if you get 3 of them. So ramping would be inconsistent and you could end up having no turn 1-2 plays at all. (In magmar yoy have in faction ramp so the results would be more consistent there)
For late game yes golems are good but if anything i think I would prefer to play golems in vanar. They can teleport them around with hearth sister and reactivate them when on opponentâs side of field. Vanar mid-late game minions are mostly weak so golems would fit in perfectly.
Still i doubt playing minions with no abilities would be exciting game after game. so as it stands now i have little to no interest in playing a golem deck.