If IQ is the authority on whether there is a heaven then Hawking is not the authority. Isaac Newton had an IQ of 210 and he spent his bulk of time on a methematical code on the biblical study of armegedon. Also C S Lewis comes to mind.
Hawking 160 IQ is trying to match wits with the Almighty with an IQ of a google to the power of a google. Rennick Einstein out
Hawking, like all humans, has made some mistakes in his profession - most notably the long standing paradox regarding information getting lost versus getting mangled within black holes. He was vehemently opposed to many other physicists about the nature of Black Holes, undertook a famous bet with an American physicist, and ultimately after many years Hawking finally conceded that he was wrong and completely reversed his position. So, like the rest of humanity, Hawking is fallable.
The scientific method is about demonstrating fallibility. Scientists proved another scientist's findings to be incorrect, which led to further discovery the only way possible. With science. No deity required.
Why do you think that actually a pin is needed in order to dance above it? Hawking told in one of those videos included in this thread, that the universe is capable of spontaneously creating itself... So a non-existent something is capable to bring itself into existence