"...if Catholic Christianity is to survive, its next iteration will be without clergy."

Good lord! What planet are you coming from? No religious congregation or community pretends to sentiments which they do not feel or believe, especially regarding local leadership, recruitment, finances, some kind of clerical presence. Pew Researchers remind us that by 2050, there will be 1.5 billion Catholics in the world, all seeking oversight, leadership, guiding heads, leaders in the form of clerics and/or laypeople. But never without clergy of some sort, of some grace or talent, capable, for example, of discerning in Matthew 25 that our criminals bear a certain resemblance to our heroes in a congregation, especially at a parish liturgy, a sacramental fellowship, that highlights forgiveness, penance, the needs of others, the poor, the least of the brethren.