Does the 'Book of Tut' theory actually hold up archaeologically?

I've been reading a lot about the theories surrounding Tutankhamun, especially those that suggest a hidden 'book' or missing narrative that changes our understanding of his life. Some modern interpretations, particularly those mentioning John Hunter's theories, seem to contradict the established archaeological record. I'm trying to figure out if these alternative historical accounts are based on solid evidence or if they are more speculative fiction. Has anyone here done deep dives into the primary sources or consulted with Egyptologists who specialize in the New Kingdom? I'd really appreciate some expert perspectives on the credibility of these 'secret' texts.