One of the most notable characteristics of the Novus Ordo Missae is the utilization of members of the congregation in roles that were formerly filled by clerics in Minor Orders. This change was brought about due to a misguided understanding of "active participation", a phrase whose pre-Vatican II definition had meant something more akin to "full engagement of mind and heart" but which in the post-Conciliar regime came to mean "everybody moving around doing stuff." There is an excellent little exegesis on the pedigree of the phrase participatio actuosa in Dr. Peter Kwasniewski's book Reclaiming Our Roman Catholic Birthright (which I will be reviewing in the near future, Lord willing). For those of you who don't have the book, I recommend this article from Dr. Kwaskniewski at New Liturgical Movement.
While there are many examples of congregants being substituted for clerics in the new Mass, here I'd like to focus on the role of the lector in the Novus Ordo, specifically in utilitarian terms. That is, there are many good arguments that it is more uniquely fitting for clergy to lector; here I am going to present an argument for the same based on the fact that congregants are generally bad at doing the readings.
Before we examine this, I want to reference from the Rule of St. Benedict, Chapter 45, on mistakes made when doing the readings. St. Benedict wrote:
Should anyone make a mistake in a psalm, responsory, refrain or reading, he must make satisfaction there before all. If he does not use this occasion to humble himself, he will be subjected to more severe punishment for failing to correct by humility the wrong committed through negligence. Children, however, are to be whipped for such a fault.