Except for the parts that hackers could change and overwrite, the virtual reality world in 'The Matrix' had everything that a real world could have. Even if some people knew that it was all fake, their bodies still would think that it was real subconsciously.
It was a complete world built on the algorithms created by an AI's super intelligence.
In contrast, most of the current fantasy realms and fantasy arrays were low-level simulations of the real world. The goods ones could only give people the illusions, let alone simulating the basic structure of the world.
Of course, this was a concern for the super masters instead of the weak cultivators and young people; they didn't have to spend time on that.
Even for the super masters, they had a long way to go in this area.
