Their agenda isn't terror, that's just a bi-product. Their agenda is conquest, by violence. Its an islamic oblgation to expand the muslim world, they just differ in how. Rapid breeding isn't enough as non-muslims etc can see it coming, preying on women of other communities has diminishing...
An opinion or beleif of something abstract cannot be wrong, By what objective measure are you using?. Islamic obligation is to conquor/spread Islam, its just a question of how.