[makeitdouble]

Well, given the centuries and number of people and things around the globe that fit some kind of Christianity, yes I expect the meaning of the word to be pretty diluted.

That's the same logic regarding any concept at that scale ("American" would be the same case, there is a tight definition, but the wider usage has almost nothing to do with it)

To me that's just how language works.

[aphantastic]

Saying it’s diluted is one thing - I actually agree there. Saying that because it’s diluted, it actually means specifically “X” is totally different and indefensible.