Rather hilarious. Sort of like when Pat Robertson said that the Haitian earthquake was caused because of Voodoo and Devil-dealing. Or when Jerry Falwell said that 9/11 was caused by Gay people being tolerated in US society. Or when even a few buddhists proclaim that a crippled person must have done something bad in his previous life. Or when a few hindu gurus proclaim that members of the lower castes are being "punished" via Karma for past sins and thus deserve to be treated like dirt.
All religion is prone to this sort of nuttery. Most religious people (these days) don't think this way, and I applaud them for that.
You would think that if his hypothesis is correct, then Las Vegas should be a big pile of rubble. Indeed, if his hypothesis was correct, then 99% of the USA would be rubble, given that by Islamic standards, 99% of all Western women dress immodestly.
As you know, his hypothesis doesn't stand up to what we know of the world. Much like most old superstitious nonsense.