Council of Trent on the Mass and the "Substance of" Tradition
"The Holy Council declares moreover: The Church has always had, in the dispensation of the sacraments, their substance being saved, the power to decide or to modify what she judges better to suit the spiritual utility of those who receive them or with respect to the sacraments themselves, according to the variety of circumstances, times and places.--- The Council of Trent, Dz 1728; also Dz Herder ed, 1955, #931, p. 256"
The whole Catholic world accepts the eucharist as the eucharist in the new missal. Only less than 1% of all Catholics constantly cavil against it. They simplistically blame the liturgy for the decadent times which more than accounts for people turning away from religion (Lk 18:8)