If we are truly seeking Christ, then we will be very uncomfortable with the foolishness of the modern church, we will develop discernment, because we sense something isn't right, so we go to prayer to find out what the Holy Spirit is trying to say to us, and then He will tell us.
James 1:5 "But if any of you lacks wisdom, let him ask of God, who gives to all generously and without reproach, and it will be given to him."
Those who are fooled by bad doctrine and emotional hype are those who are not listening to the Holy Spirit, if they hear Him they do not ask what is wrong.