I tend to doubt hypothesis that rely on a single person to make a decisive difference for huge amounts of people, and if anything I doubt it more than usual in such a situation.Do you think Tyson is onto something? Why or why not?
Exceptionally clumsy and exceptionally insightful people arise all the time and are of little consequence in and of themselves. It is the zeistgeist that enables or compensates for them that makes a real difference.
Islaam as a whole places a lot of emphasis on the importance of obeying authority and conforming to the expectations of the greater community. While that is aimed towards divine authority as opposed to human, at the end of the day people need to deal with other people and therefore establish human authority figures even if they insist on perceiving them as god-enabled.
Islaam gained political influence in many places at various times, mainly because it is so adept at galvanizing popular support from its masses. And it lost much of that influence time and again, as perhaps best illustrated by the fall of the Ottoman Empire, mainly because it does not respect itself enough to acknowledge the importance of questioning and renewal in social environments.
Tyson is not necessarily wrong, but I think he is mistaken if he thinks that it was just a stroke of unfortunate bad luck that a particularly unenlightened figure such as al-Ghazali came to be listened to.
What, in your opinion, brought about the end of the Islamic Golden Age?
The refusal of the Islamic masses to choose reason over conforting yet ultimately fraudulent refuge in belief.