It opened in 1931 and underwent a major renovation in 1997. Apparently, the water usage is sustainable (see below), but it still doesn't excuse the fact, in my mind, that continuing to support the upkeep of a green-ass golf course at the edge of Death Valley shows how out-of-whack its patrons are with the changing climate.
"In an area as hot and dry as Death Valley, balancing water usage with conservation requires significant planning. Furnace Creek and its namesake resort exist in their location because natural spring water flows from nearby mountain ranges to create an oasis. By routing the water from one point to others, the resort’s goal is to use the same molecules of water for several purposes. The spring-fed water is first used at the Inn to irrigate gardens and supply the swimming pool which was designed with a flow-through system that minimizes chemical use. That water then continues downhill to the Ranch where it fills the ponds on the golf course, providing habitat for local and migratory wildlife. The water in the ponds then irrigates the golf course." - How Xanterra’s Furnace Creek Resort is Sustainable, greenlodgingnews.com
If you actually believe this then there's nothing anyone can say to help you.
If a naturally occuring spring runs directly into a wide flat area in the middle of the Mojave desert, then it doesn't naturally reabsorb into the ground as the hard pack just makes it sit on the surface. Since the water is shallow and sitting on the surface, it evaporates instead of being used to water native plants or support native animals.
The golf course in question is not a dam, it's putting the already available water to use more efficiently. Growing non-native grass, but also native plant species, and providing native insects and animals a way to utilize that water before it would have otherwise evaporated.
Dams destroy native ecosystems by flooding and displacing them, or removing available water downstream. The golf course in question does none of those things.
"Nature is perfect and humans are capable of nothing but destroying it" is a great take BTW. You could have saved a few people some time by leading with that.