This is the kind of fighting that western armies excel at: no confusion as to who the bad guyz are, clearly delineated fronts, no easy concealment among civilians. I can see why the French can so confidently say that they are going to sweep them out of the country entirely.
The only potential problem is that the Malian government is pretty worthless, so the French need to restore their efficiency a lot before leaving.
Most of the governments from central Africa south are pretty worthless. Everyone on the continent was better off when the countries were colonized.