No one will discuss the new destruction system below.
Besides, if you'd be involved in project budgeting you would be aware that the costs are growing and using cheap alternatives is inevitable. This is the business. first of all.
If you hate people that can make your life easier and see the threat in everything related to AI then you can hardly call yourself an artist. Rather than a kid who likes to be in a comfort zone.
Check out a node-based procedural and infinite game map generator for Unity called MapMagic by Denis Pahunov.
Each node on a graph represents a terrain or object generator: noise, voronoi, blend, curve, erosion, scatter, forest, etc. Once the nodes are connected the magic happens: a game map will be created without any human involvement.
No need for painstaking work sculpting and drawing vast terrains, placing thousands of objects, painting fields of grass: just give your orders to the plugin in the form of a node graph and it will create a map automagically!
The tool is said to support multiple biomes: you can blend together forests, deserts, snowy plains, jungle and other terrains.