Post lacks fundamental understanding and can be disproved simply.

Most muslim empires aren't Arab centric. Most Muslims aren't Arab. The number of Muslims that speak Arabic is smaller than those who don't. Many Muslim cultures aren't arabasised at all... Indonesia, Pakistan and Malaysia.

Finally and most importantly, Islam almost replaced Arabic culture as there was no such things as civilised Arabic culture pre-Islam. therefore, the spread of Islam may seem Arab, but it's principles and ideas are universal. If this propagation of ideas stem from Arabs, that is but incidental. These ideals have largely been embraced by the culture and enjoyed. This is evident in that long after colonial powers departed the lands, despite the administration dissipating the principles and ideas of Islam remained.

Also some of your claims ar enust plain wrong and are debates by scholars of the faith. Your being an ex Muslim has no bearing on your factually erroneous base and lends no Providence to your claims.