I did some quick research on this, as we have a past CAF thread where Fr David, one of the priests who used to post here and has left, said that it’s not quite correct to say that the Penitential Act is “omitted” from any Mass because it is always instead replaced by some other rite. Pray Tell Blog explains,
At a Requiem Mass, it is replaced by the sprinkling of the casket with blessed water… There is considerable confusion about the rite of blessing and sprinkling of water. Just because it replaces a penitential act does not mean that it is itself a penitential act. It is not. The sample introduction in the Roman Missal makes it clear that it is a reminder of our baptism ― surely a joyful and not a penitential occasion.
Is this strictly true for the EF though? It doesn’t seem that the
Asperges replaces anything there, it is before the beginning of Mass.
“The ceremony has been in use at least from the tenth century, growing out of the custom of early antiquity of blessing water for the faithful on Sundays. Its object is to prepare the congregation for the celebration of the Mass by moving them to sentiments of penance and reverence suggested by the words of the fiftieth psalm, or by impressing on them that they are about to assist at the sacrifice of our redemption as suggested in the psalm used at Easter time.”
https://en.wikisource.org/wiki/Catholic_Encyclopedia_(1913)/Asperges