In the USA as elsewhere golf courses are incredible wastes of water and false green spaces that would function better as green spaces were they actually parks open to the public they serve the wealthy. What is different is that in the US there is very little real (operational) worry about waste of water (or other resources) - at least compared to other places - and there is lots of space compared to other places.
In wealthy parts of the US, maybe
The vast majority of the world is nothing like this
From Scotland to Tasmania, most courses congregate around already wet and mostly sand/loamy soil (largely unusable for other purposes without major construction)
I agree with you for artificial American places like TPC Scottsdale or Wolf Creek GC etc
That is an overly broad generalisation. Where I live, golf courses aren’t irrigated at all - they just rely on rainwater, like every other farm does.
One of the golf courses near me has tee times for $10. I do not consider that something that only “serves the wealthy”. They also periodically close the course and open it up for RC plane enthusiasts.
Another one you can easily go for a walk in - I often do. It is effectively a public space.