If you wan't to know what mainstream is then put on MTV or BET, now THATS MAINSTREAM. The fact that Lynch is an OG doesn'y mean the guy is mainstream.
Tell me the last time you heard his shit on the radio or saw his videos on the TV.
And for the people that don't like "Lynch By Inch" you need to check yourselfs, because you wouldn't know good music if it creeped up and bite you in the ass. That shit was the deepest/personal shit Lynch has ever done, but most of the people wan't that ripp-gut shit. Lynch is an artist that keeps evolving, because if you don't evolve youl'e become a living joke (look at snoop).