I tend to disagree. Commercialization of Hip-Hop isn't necessarily a bad thing for the Hip-Hop culture. Does it use stereotypes? Probably yeah. But does it really limit Hip-Hop to a certain type? I don't think so.
Just look at the variety mainstream Hip-Hop artists today: Drake, A$AP Rocky, Kanye West, Kendrick Lamar, Lil Wayne, Rick Ross, Future etc. All those artists are commercially successful but still take Hip-Hop in completely different directions. Drake focuses more on emotinal topics while Rocky does his "swag" and fashion thing. Kendrick Lamar is the Nas of this generation while Lil Wayne just raps about his dick. Rick Ross is impersonating this Gangster image while Kanye constantly redefines the boundaries of Hip-Hop (808 and Yeezus are the prime examples for that). Hip-Hop has become pop but that actually diversifies its culture and makes it even more interesting than just staying within the Backpack understanding of Hip-Hop.
Now, the problem MMM imposes is this "nig-ga" stereotype which only makes sense from the POV of someone who isn't necessarily a part of the african-american culture. Those who make fun of the usage of the word "nig-ga" are doing that in order to uphold the stereotype they have about black culture. "Nig-ga" in Hip-Hop is never used as derogatory and racist term, only white suburban kids use "nig-ga" as such.
