A person in the
Catholic Church who works to destroy the Mass by introducing
innovations such as hand-holding and bad translations.
"Lit" comes from liturgy. "-nik" comes from russian. As in "sputnik." It's also been used in words like beatnik, refusenik and no-good-nik. In any case, it is a
derogatory term used by Traditional Catholics towards the liberals who have ruined the Church over the past 40 years with their stupid changes to the Mass.