St. Paul said that he would always preach Christ, and Him crucified.
When Paul wrote those words, Jesus had been taken down from the cross, buried, and had risen again.
Yet Paul said he would ALWAYS preach Christ crucified.
When Catholics put up an image of Christ crucified, they are, LIKE PAUL, preaching Christ crucified.
They are not morons, and therefore they don’t believe the moronic notion that Christ IS STILL ON THE CROSS.
But the Catholic church has left Him hanging there, on the cross like you said only morons believe.