I think that the main benefits of renderings in general are for sales. Either to sell your design to the owner or for the owner to sell memberships or real estate to consumers. Also, for clubs to sell restorations/ renovations to their members.
Harris Kalinka is the Pro V of renderings and it gives the idea of how it will soon be photorealism:
https://www.youtube.com/watch?v=gdI3QlRScIo
They are pricey (for good reason) and a lot of big projects use them. Cabot St Lucia does for example. That is a pretty ideal situation because prospective lot owners can see pretty much what they are buying without having to use their imagination.
The shaping abilities in the digital environment at that level have no restrictions, other than that of the artist guiding it. But the micro contours of the greens are irrelevant and presumably, none of this kind of rendering will be used in the actual construction. The shapers will do as they see fit on the ground.
Over the past few years, I've been doing a lot of renderings. I think that the most useful ones are for architects who have been hired for renovation work and the memberships want to see what the architect is proposing before they start going in the ground. It's been educational to show them what a new corridor looks like going in a different direction or what views look like with trees removed. It provides a lot more comfort than 2D drawings. But again, the actual micro details aren't relevant for these types of projects. I import the CAD and/or LiDAR into the models and then do the finer sculpting in the style that the architect is going for. When they actually do the work, they ignore the digital model and they do what makes sense.
One other use that I've been doing is for restorations where you're using the digital model to photo match historical photos of greens and other features that are gone or altered. Once the model and the photos seem to match from available angles, then it serves as a rough draft/ contour map for the architect to start with. They will then fine tune that in the actual construction. For this type of thing, it's really nice to be able to move the sun around, to change the focal length, and to move positions in order to match historical photos. A lot of the Lido project was this type of thing.
This tech has been around for a while now, but it's just getting to be higher definition. Most of the established architects now are used to working without it and they don't need it to win jobs. So, for someone like Tom Doak, it can be a waste of time or worse, can set expectations and box him in a corner- say if I did renderings for a new project of his and then he wanted to call an audible in the field and do something better than what he planned. But, as he mentioned, having used it on the Lido project, he found an unintended benefit from it and will now use the "save as" feature. That will allow him to sculpt something in sand once or do all the greens in a short time frame, and then lock them in digitally so that they can be restored as intended when the wind changes them. Hopefully that will increase his efficiency and allow him to travel less so that he can continue to take on projects in distant locations without as much burnout.