I think the subject of this thread might be misleading as to the content of the article. Obviously if all the world’s bishops, including the Pope, decided to change this discipline, then obviously it would be changed–the college of bishops, together with its head, the Pope, exercises supreme authority over the Church. If they all, including the Pope, agreed to change a discipline, there would be nothing stopping the discipline from being changed. Please correct me if I missed it, but I don’t see where this was discussed in the article.
In the article the Pope merely said bishops’s conferences should try to discern solutions to the shortage of priests in their areas and submit those suggestions to Rome for approval. I don’t see where he said Rome would approve married priests if they were suggested. Also, there’s no mention of a decision being made based on a “majority” of bishops, as the OP suggests. Again, I may have missed where this was stated by the Pope or bishop in the article.