Certainly the notion of individualizing Christianity is as old as Christianity itself, but I would argue that the contemporary version of it is really pretty recent. Go back 50 years ago and even most US Baptist churches wouldn't recognize the contemporary version of it.
The concept that we have today really developed in the 80s and 90s.
I'm curious. Why are you here? If you think it's all made up nonsense, why did you feel the need to comment on it in an intentionally insulting way?
Did that make you feel bigger?