Despite the pimp-daddy image that his label, SPIN magazine (see slide image), and the rest of the industry wanted Mix-A-Lot to have, he's actually a down-to-Earth guy who wrote "Baby Got Back" as a commentary on Eurocentric beauty standards. In the oral history, he talks about seeing an ad during the Super Bowl, and he was so sick of "straight up-and-down bird legs." He says "Black men like curves. When they're crooning to women about how beautiful they are in an R&B song, the ladies you see in the video don't reflect what those guys like." So, apparently he didn't lie.
In a SeattleMet article, Mix also says that his ego has never been what drives him, nor has the idea of gaining street cred. He's really just a hard-working guy who had always tried to have a good career. Of course, he's sometimes forgotten this too, like in 1996, when he had to pay the IRS $150,000. At first he was enraged (understandable, we'd be too), but his brother came out and simply asked him the last time he'd seen their mom. That woke Mix up to how he owed so much because he'd focused too much on work and fame, and not on family.
As you can see, his family always tried to put things into perspective for him, and it worked. Mix started seeing his mom way more after that, to the point where she could recognize him long after she lost most other memories to dementia. Gah, could we love this guy any more? He actually DOES like big butts, and his mom. Not her butt, though. Eww.