Rabbi Yosef believes that the custom leads in many cases to "foolishness and lightheadedness," and does not elicit the proper reaction – and, if not for the weight of Jewish tradition, should be eliminated altogether.
Many less knowledgeable Jews, says Rabbi Yosef, are unaware of the roots of the custom. The breaking of the glass was originally instituted as a sign of mourning for the destroyed Holy Temple, and was meant to show that even at the times of our greatest joy, Jews did not forsake their homeland and heritage. But an article in Friday's edition of the Shas-affiliated Yom l'Yom newspaper analyzes Rabbi Yosef's viewpoint on the matter, and quotes him at length as being highly critical of the custom.
Rabbi Yosef criticizes both guests, who cry out their good wishes for the happy couple right after the glass is broken – a most inappropriate reaction, given the reason for the custom – as well as the grooms, who often turn the glass-breaking ceremony into a contest of physical strength. "Many unknowledgeable people fill their mouths with laughter during the breaking of the glass, shouting 'mazal tov' and turning a beautiful custom meant to express our sorrow into an opportunity for lightheadedness."