All exaggerations are dangerous.
A fork can bring food to the mouth, but is not to be taken as food. If silence were a guarantee of sanctity, or sanctity itself, then noise, confusion, and the highest decibel level could be automatically identified with sin or damnation. It is true only that silence, or a similarly centred approach to religion, makes it easier to listen to the voice of the Spirit, to get in touch with one's deepest essence, and with God. One cannot absolutely condemn as sinful each and every situation other than silence, even because there have been and there are in the world sincere forms of religious piety, which involve planned songs, prayers, and exclamations, which suit those who use them and are valuable in lifting them up to God. These are also blessed for the peace they bring and the fruit they give.