Calm the jerk in your knee and your hearts.  

Stender's property is very amenable to that kind of re-zoning.   The property is surrounded by 7,000 sq. ft. lot Maunawili subdivision homes.

And, because of the type of landowner and steward he and his family have been the whole time they've owned the property, the land will be better for it.  

At the very least, it will curb the further encroachment of invasive species that have overtaken all of the Windward side valleys.

My guess is that no one will even be able to see any additional structures built.

 But, think about it.  Sounds like he wants to accommodate dwellings for his family.  LONG TERM.  He sought a change that permits building multiple residences on a SINGLE lot.  Not spec build by subdividing and making individual houses easy to sell later with smaller lot size and dwellings.

His ageement not to develop the rest should also allay fears of overbuilding and speculation.

Building a family compound should always be ok.