I take it you are criticizing the Rosary which merely demonstrates your absence of understanding the Rosary.
And I wonder whether he spends that half hour actually praying himself. It’s easy to criticize how others pray. Back when that was written, the pagans actually did babble out words that they did not understand and that had no meaning. In Tibet, they have words that they don’t understand written on paper and fluttering in the wind and call that prayer. Most Protestants don’t understand that the Rosary is a meditation on biblical events and that 90% of it is directly quoted from the Bible.