Fr. Groeschel didn’t really write that, did he? The current common method of receiving Holy Communion is
not what was recommended by Saint Cyril of Jerusalem, who exhorted the faithful to
receive the Eucharist in the right hand, with the left hand supporting it underneath:
In approaching therefore, come not with your wrists extended, or your fingers spread; but make your left hand a throne for the right, as for that which is to receive a King. And having hollowed your palm, receive the Body of Christ, saying over it, Amen. So then after having carefully hallowed your eyes by the touch of the Holy Body, partake of it; giving heed lest you lose any portion thereof; for whatever you lose, is evidently a loss to you as it were from one of your own members. For tell me, if any one gave you grains of gold, would you not hold them with all carefulness, being on your guard against losing any of them, and suffering loss? Will you not then much more carefully keep watch, that not a crumb fall from you of what is more precious than gold and precious stones?
Like the traditional methods of receiving Holy Communion in the east and west, St. Cyril’s method includes internal and external expressions of reverence for Our Lord, and special care is taken to avoid losing even a small particle of the Eucharist.
From what I have observed, most Catholics today do not so much as nod their heads before receiving our Lord in the left hand, and once in the hand, He is taken and consumed in a manner hardly distinguishable from the way a potato chip might be eaten.