Earlier quoted context omitted.
More people building dwarf fortresses means less people doing whatever they are right now. While some jobs may be completely pointless, I think we would quickly find that we actually need people doing boring jobs because society would fall apart without them and then no one gets to build video games.
Maybe. I suspect the amount of actual work to be done has dropped a lot. Surely it's worth trying a few steps in that direction.
The current entertainment market already saturates this several hundred times over.
Creating several dozen more dwarf fortresses won't do anything since they will just take attention away from each other.
Since information can be replicated for almost nothing.
Whereas physical labor can't be replicated nearly as easily.