As has been stated, it had to do with the spread of disease not a blanket power of bishops. The person you are quoting is only commenting about a letter he received. A letter which he did not reproduce and may have more in it. I really don’t doubt the letter only the interpretation and what might have been left out.
All the documents that I have read indicate that is the
communicant that may decide.
Missale Romanum, Institutio Generalis, n. 161. (2002 Roman Missal)
referred to in Redemptionis Sacramentum (2004)
2010 US GIRM - 390. It is for the Conferences of Bishops to formulate the adaptations indicated in this General Instruction and in the Order of Mass and, once their decisions have been accorded the recognitio of the Apostolic See, to introduce them into the Missal itself. They are such as these:
the manner of receiving Holy Communion (cf. nos. 160, 283);
#160 and #283 are:
- The Priest then takes the paten or ciborium and approaches the communicants, who usually come up in procession.
It is not permitted for the faithful to take the consecrated Bread or the sacred chalice by themselves and, still less, to hand them on from one to another among themselves. The norm established for the Dioceses of the United States of America is that Holy Communion is to be received standing, unless an individual member of the faithful wishes to receive Communion while kneeling (Congregation for Divine Worship and the Discipline of the Sacraments, Instruction, Redemptionis Sacramentum, March 25, 2004, no. 91).
When receiving Holy Communion, the communicant bows his or her head before the Sacrament as a gesture of reverence and receives the Body of the Lord from the minister. The consecrated host may be received either on the tongue or in the hand, at the discretion of each communicant. When Holy Communion is received under both kinds, the sign of reverence is also made before receiving the Precious Blood.
- In addition to those cases given in the ritual books, Communion under both kinds is permitted for:
a) Priests who are not able to celebrate or concelebrate Mass;
b) the Deacon and others who perform some duty at the Mass;
c) members of communities at the Conventual Mass or the “community” Mass, along with seminarians, and all those engaged in a retreat or taking part in a spiritual or pastoral gathering.
The Diocesan Bishop may establish norms for Communion under both kinds for his own diocese, which are also to be observed in churches of religious and at celebrations with small groups. The Diocesan Bishop is also given the faculty to permit Communion under both kinds whenever it may seem appropriate to the Priest to whom a community has been entrusted as its own shepherd, provided that the faithful have been well instructed and that there is no danger of profanation of the Sacrament or of the rite’s becoming difficult because of the large number of participants or for some other cause.
In all that pertains to Communion under both kinds, the Norms for the Distribution and Reception of Holy Communion under Both Kinds in the Dioceses of the United States of America are to be followed (particularly nos. 27-54).