I think it was his abrasive way of saying that the countless Protestant demoninations are so different the only thing they have in common in their schism from the Catholic Church.
I was raised a Methodist, but have attended services at numerous churches over the years. Whether Methodist, Presbyterian, Baptist, Nazarene, Wesleyan, Lutheran, etc., I never witnessed these horrible divisions I'm always seeing claimed. The important things are those which unite us, primarily our belief in the resurrected Lord Jesus.