It is the Church who decides what is right or wrong at the Mass. Not the local community.
It is not “their liturgy,” as you posted. It is the Church’s liturgy.
It’s good to recall the words of St John Paul the Great (emphasis mine)
I consider it my duty, therefore to appeal urgently that the liturgical norms for the celebration of the Eucharist be observed with great fidelity. These norms are a concrete expression of the authentically ecclesial nature of the Eucharist; this is their deepest meaning. Liturgy is
never anyone’s private property, be it of the celebrant
or of the community in which the mysteries are celebrated.
vatican.va/holy_father/special_features/encyclicals/documents/hf_jp-ii_enc_20030417_ecclesia_eucharistia_en.htmlThe attitude that “this is my liturgy” or “this is our liturgy” in contrast to what is the Church’s is at the very core of liturgical abuses.
This is the beginning of paragraph 52 (from above):
52. All of this makes clear the great responsibility which belongs to priests in particular for the celebration of the Eucharist. It is their responsibility to preside at the Eucharist in persona Christi and to provide a witness to and a service of communion
not only for the community directly taking part in the celebration, but also** for the universal Church**, which is a part of every Eucharist. It must be lamented that, especially in the years following the post-conciliar liturgical reform, as a result of a
misguided sense of creativity and adaptation there have been a number of abuses which have been a source of suffering for many. A certain reaction against “formalism” has led some, especially in certain regions, to consider the “forms” chosen by the Church’s great liturgical tradition and her Magisterium as non-binding and t
o introduce unauthorized innovations which are often completely inappropriate.