Suicide bomb, as in terrorism? That's the point?
When Abduallhi Yusuf was establishing Puntland, he went to war with a Salafi group called Al-Tihaad, once they were crushed, Abduallhi stipulated terms that they were effectively banned from politics, but to shut them up they got economic concessions.
The reason Abduallhi wasn't going to tolerate a religious group fronting as a liberation movement, is because he understood the nature of these people, nothing wrong with a genuine Islamic movement.
But question, aren't Somalis Muslim anyway? Shariah is literally enshrined in our constitution. These are thugs masquerading as religious leaders, the fact that Al-Shabab targets innocent civilians and public infrastructure is proof of that.
Gangsters in robes, thank God ICU was crushed.