Is this a case of NATO in the service of the Muslim Brotherhood?
No, the influence of the Muslim Brotherhood is greatly overstated in the press. They have a strong presence in Egypt socially and politically, and an active gun-running franchise in Syria. Beyond that minimal.
The north of Africa doesn't have the arab influence throughout, many ethnic Italians, Berbers, French. Too much of a tribal melting pot for the MB to get established beyond Egypt.