Why they are bragging is a mystery because their numbers are down and it's getting progressively harder to get people to blow themselves up into little bite-size pieces, especially when their clerics tell their flock "You go first--I'll follow." And then they don't.
Through the first 9 months of the year, Amaq claimed a total of 782 suicide bombings in Iraq, Libya and Syria. Do the math--that's an average of 86.888888 (etc.) a month, a pretty respectable number for those homicidal maniacs, but 53 in September has them worried.
But in an attempt to make lemonade out of lemons, the Islamic State has continued to claim a historically high number of "martyrdom" attacks in 2016.
In 2015, the Islamic State carried out an average of 61 suicide bombings per month, more than any attacks in previous years according to the National Consortium for the Study of Terrorism and Responses to Terrorism (START).
Most of the suicide attacks during the first 9 months of this year, 462 of the 782, were carried out inside Iraq, which targeted Iraqi government forces, reports Amaq.
ISIS launched 289 attacks in Syria during the same period.
At the present rate of suicide attacks, it is likely that a) there will be fewer available suicide attackers; b) the Islamic State will find it more difficult to recruit volunteers to do the job; and c) clerics will continue to stand on the sidelines as cheerleaders.