i agree with the points you pronounce: The thing with the terms “Christian” or “Christianity” is that they are only a general identifier that affirms that one regards Christ as the Messiah, so a “true christian” can be a catholic, as it can also be a lutheran, as it can also be a calvinist. The argument of a denomination not being “truly christian” varies in base of the most popular interpretation of the faith within that specific culture/region. Mormons would be considered heretical since they deny the divinity of Christ. (for the majority of Christianity, which follow the Nicene Creeds) It’s also important to notice that the faiths of different peoples always have influenced other faiths, and so it is virtually impossible to discern an “original” or “true” religion in any and all case. idk if im yappin too much here but i really like talking about historical theology and philosophy lol