Boko Halam was to happen either way and if given time by the government it could have been much stronger and dangerous than it’s now under the leadership of Yusuf. If you listed to Yusuf ideology he seems to be slowly but smartly shifting them from Sharia and other islamic teachings into more radical and violent teachings and since he was more charismatic hence convincing than his juniors he could have managed to recruit more followers with die hard believes.
Yusuf had to die to tame the already dagerous mutating monster that later became Boka Halam.
Without the “religion of peace” there is nothing more to drive or unify the BH agenda. Nigeria has a 48% populace of muslim believers which with a 186M population is higher than the entire population of Kenya. Out of that segment of the population BH have a wide pool from which to recruit misguided youths into their ranks.
its important to focus on the main cause of un employment. Mostly its about inequality and corruption from a few rulling elit. People who are unemployed are poor and some even strungle to get a single meals meal a day.
This brings frustrustration and such people are prone and easy to be persuaded by people who could promise
them anything. Poverty has direct correlation with radicalization. In short the root cause is inequality, poverty and lack of opportunity and also marginalization. Its isn’t about a single tribe as most would like to see it