Subjective reality as explained here:

Subjective Reality (SR), as I describe it, is the perspective that your true identity is the dreamer having the dream, so you are the conscious container in which the entire dream world takes place.  Your body-mind is your avatar in the dream world, the character that gives you a first-person perspective as you interact with the contents of your own consciousness.  But that avatar is no more you than any other character in the dream world.  This perspective is also not objectively falsifiable, so it cannot be proven wrong.  However, I find it a very rich and empowering way to interact with the dream world of reality on multiple levels.

Having those assumptions it's easy to arrange arguments to explain everything about how reality works, as is done here.

Are there some rational arguments to disprove this as explanation to everything?