I think the verse in chapter 17 explains itself, CB. However, the counterpoint to the “go along” argument is that the Church has not magically evolved into a small group of faithful hidden in the hills of Kentucky/Tennessee.
So, to me that means some of our exclusivistic groups are a bit too exclusive.
Your original statement was “If so, then Jesus wants us to be ONE.” You still haven’t defined who “us” is nor have you defined what “one” includes. Would you also include Muslims like the Catholic Church does?