>All those complex surfaces you see in contemporary games? Very nice. But the user cannot point at an arbitrary part of a rock wall and say "move this over a bit and make it bigger".

The Red Faction series, building games like Minecraft and 7 Days to Die, and games like Factorio are some pretty obvious examples where you're completely and utterly wrong, so I'm not really sure why I should trust anything you said in the rest of your comment.