Golden freddy doesn't have movable joints in his hands or feet. Plus, Springtrap is known specifically to be wearable. In the second game, Phone Guy states that a yellow suit was used, but no other details were shared. Springtrap was in the back, as Phone Guy states, so he could have been used.
Commenting on your point, I wasn't saying that the suit spring trap killed them, I was referring to which suit the purple guy used. You made no effort to counter my argument, so I think you're mistaken