Theists are the ones claiming an explanation for the nature of existence - the burden of proof is on them. “Belief” is not a valid argument when putting forward

Theists are the ones claiming an explanation for the nature of existence - the burden of proof is on them. “Belief” is not a valid argument when putting forward a theory. I might “believe” we are living in a simulation, but it doesn’t make it any more true than a belief in a magical all knowing space unicorn that rockets through the universe propelled by rainbows while it creates life or any other as of yet non provable nonsense