I would be more interested about terrorists organization like Al-Shabaab that at least control many towns.
Does Boko Haram and ISWAP even control a single town or they just control a few villages in Lake Chad and in the Sambisa forest?
Also reading the report they seem quite clueless.
Doesn't Boko Haram control basically all of northern Nigeria? Yes, it's incredibly rural (even deserted) but it's still half a country.