Do you mean this group?
https://www.facebook.com/groups/phoenixbroncos/
Because I cannot locate the page you named
or this page:
https://www.facebook.com/groups/arizonabroncos
I did Sheeps Bridge a few weeks back, the last 15 miles were a bit more technical, some great views. Temps were 110-120F in the outback, so ensure you have a GMRS and extra water. AZ is not forgiving. This site has piles of trails.
https://azoffroad.net/verde-river-sheep-bridge
Imagine the idea was introduced by the starter motor manufactures so they can increase the starter replacement business. I personally hate it, but happy it turns off when in 4x4 mode.
One of the first rule of Human code, is 'Never mess with a person's ride'. Truly horrific. Hope the responsible party faces the full extent of the law.