No, the process of human evolution is a tale of organisms adapting to their environment. There is no guarantee that human beings will evolve into something more intelligent.
If the average person is granted the ability to manufacture their own reality without any need for earthy concerns, one might think evolutionary forces would push people into becoming marginally intelligent beings focused on decadence.
No there is no guarantee. However in the past it is safe to say that, on average, the human evolutionary path involved an increase in intelligence. Whether that is 'the tale' I will leave to poetic license. I did this to disprove the notion that beings could not produce beings of greater intelligence in the parent post. To disprove a general statement you only have to show one contrary instance.
That was my point. That there exists a process (evolution) where greater intelligence can spring from lesser intelligence. I agree the mechanism is quite different but it demonstrates there is no fundamental obstacle to the process of increasing intelligence.
Perhaps this is one of the mental leaps that creationists are not able/willing to make. Their belief in an ultimate intelligence producing lesser intelligences is at least logically consistent.
If the average person is granted the ability to manufacture their own reality without any need for earthy concerns, one might think evolutionary forces would push people into becoming marginally intelligent beings focused on decadence.