They are great figures, but there is still a sculptor working on it after the scan. The limits of the scan are based on what's available. If they want a WWII Russian tanker, they need to get a reenactor with the proper gear and then scan. Those figures are cleaned up scans from a very high end printer.
Casting is not going anywhere though. No one is going to tie up a quarter of million dollar machine to print multiple copies of a figure that would wholesale for $6-7 (retails for $15), especially when a mold can easily be made to run hundreds. Technology is runaway, but it can't melt plastic faster than a certain speed. Things have to cool, etc.
Sculpting isn't going anywhere either, just digital sculpting is going to be the future of it. Figure collectors still prefer hand sculpted stuff, they liken it to an oil portrait verses a photograph. A good sculptor can capture something, but things will change that's for sure.
For just your basic DML figure or a McFarlane action figure, we're already there, very little hands on work in those areas.
Definitely a great time to be a modeler. The options are endless and the engineering the best it's ever been.