Dj Khaled is kind of the posterchild for egotistical dickhead, I will never dispute this. However, his skill is bringing talent together and he is pretty damn good at it. He's more like a movie producer/casting director than a music producer in how he does business. He hears a beat, thinks "Who would destroy on this?" Buys the beat, Makes some phone calls, gets some artists onboard to do a verse, pays the artists for their work, mixes the track or pays a producer who he thinks has skills to do it for him and releases it.
He is the child of Palestinian immigrants and built himself his dream job and is worth an estimated 70 million, have a look at his wikipedia for the sheer number of awards he has been nominated for... Talentless hacks cant do that. Raging egomaniacs with annoying personalities sure can tho.