I see the point you are trying to make and it has some merit. However, I think there is also merit in distinguishing between like people who say they are Christian but don’t follow anything from the Bible and people who say they are Christian and do.

Like, you can point to most shapes and say “that’s a polygon” but sometimes it’s more helpful to say “that’s a triangle”, “that’s a square”, and "that’s juat a line, not a polygon actually "