What if the saintly pius saint person you are asking for intercession from, is actually in hell? Now that would be creepy
How do you know that the person on earth that you ask to pray for you isn’t going to end up in hell? How do you know that your minister who is leading his flock isn’t going to hell? How do you know that the person who constantly quotes scripture on internet forums isn’t going to hell? How could a truly pious, SAINT go to hell? If he was truly pious and truly a Saint then he is with God.