They are NOT.....and it's not my definition, it is The Word of God in the New Testament that says they are not......
I'm glad my views are "narrow".....
Matthew 7: 13 - 14
13 “Enter by the narrow gate. For the gate is wide and the way is easy that leads to destruction, and those who enter by it are many. 14 For the gate is narrow and the way is hard that leads to life, and those who find it are few.
If someone is NOT in the church that was founded by Jesus on the Day of Pentecost in 30, they are by definition NOT a Christian....no matter what they want to call themselves.......I didn't say that....the Holy Spirit revealed THAT in the New Testament......