Archeologism

Taking past practices as inherently better than present practices is archeologism. When "liturgical reform" was prompted by the occasion of the Second Vatican Council, many rituals were picked artificially from different sources and times. They were imposed immediately in an authoritarian manner. Think of the rediscovery of Pompei as an example: works of art and sculpture were looted out of context and placed in various palaces. Pretty stuff but not living art.
Another example from a story my friend Dan told me. Dan is active on his parish council. In one recent meeting someone was talking about the "responsorial psalm" after the first Scripture reading. They wanted to get more "response" from the worshippers and reminded everyone that this responsorial was an ancient liturgical practice revived in the new liturgy. Dan simply responded (!), "Why do you think they dropped it?".