the most complex things must be lower probability than simple things
That is not a conclusion. By the definitions given, there is no “most complex thing”; rather, for any given element you pick out that you might think is the most complex thing, there are infinitely many that are more complex.
That is not a conclusion. By the definitions given, there is no “most complex thing”; rather, for any given element you pick out that you might think is the most complex thing, there are infinitely many that are more complex.
Infinity is not magic.