I wonder if any theologian has commented on the Pope’s reasoning for the distinction.
That one is easy.
Every Sacrament has a minister.
In Baptism, the minister is the one who is pouring the water using the Trinitarian form.
In Reconcilliation, the minister is the validly ordained priest with faculties.
In Marriage, the minsiters are the couple themselves.
In Ordination, the minster is the validly ordained bishop.
In each case, the minsiter of the Sacrament is the one who confects ( or brings into being) the Sacrament.
In the Eucharist, the only possible minister is a validly ordained priest. No one else may confect the Sacrament, so no one else is a Minister of the Eucharist.
However, the Eucharist is not just confected, but it is also
Communicated ( brought to the community).
That is a different ministry from the confection. That is the role of the Minister of Holy Communion.
A bishop, priest or deacon does this as an Ordinary part of thier particular ministry. A layperson may do this in an Extraordinary fashion.
As a little tidbit of info, there IS such a person as an Extraordinary Minister of the Eucharist. That would be a laicized priest. They still retain valid orders, and thus may confect the Eucharist, but may do so only in grave (Extraordinary) circumstances.
So if someone claimes to be an EME, they are, in fact, claiming to be a laicized priest
