One does not have typically have standing to define, except in the case of stipulative definitions which are a moot point.
I contend that definitions depend first on use and function, this is because use is concrete and stipulation is abstract, the abstract is less grounded than the concrete, and concreteness is an intuitively good standard for priority.
The use of evangelical Catholicism practically denotes 70s "contemporary music," a focus on crafting introspective personal narratives following a typical structure, feeling ones feelings instead of simply feeling, an "educated plain reading" view of the church writings where a properly educated a inducted person has transparent access to their meaning, anxiety disorders, an elevation of mundane daily actions to the realm of "intentional living," late-to-the-party Christian facsimiles of popular culture elements, etc.