Unless I'm missing something, it basically took the responses of the altar servers, and normalized them for everyone in the congregation.
As long as it is a fairly sophisticated congregation, who wants to learn the Latin and is capable of doing so, I can't see a problem with this. Yet I've heard it characterized negatively in some circles.
Why?
Full disclosure, I normally make the responses sotto voce from the pew, and I pray both of the altar servers' Confiteors.