After all, in this era, whoever controls the network controls the voice of public opinion, and a power like the Glorious Divine Kingdom, already adept at misleading the masses and spreading faith, once in control of that voice, who knows how many new believers they could convert and how much faith they could harvest. And with faith, they could exponentially expand the Angel Army—by then, what's the use of even playing the game?
Moreover, Dorothy never forgot her main mission. Their aim was not to resist the Angel Army with Magic Equipment, which is just a poor man's witch, but to possess the true Witch's Power to effectively oppose them.
To obtain the true Witch's Power, they needed to seize back the faith from the hands of the Glorious Divine Kingdom and then amass the faith of most of the world's people to conduct a ritual to awaken the endangered consciousness of the Mother of the World.
