The market is viewed as immature because the Dude-Bro shooters still sell millions. That phenomenon has been getting worse since Hollywood has surrendered some of the 12- 25 year old male market share over to the video games industry, making up for it by green lighting more romcoms and getting more female movie goers to spend money.[footnote]Someone even coined a term for it a couple years ago. I thought it was called the xbox factor but that only rings up ten million links talking about the X-factor and a few about MS's business plans for the 360.[/footnote] It doesn't help that the games without shooter mechanics still rely on assassination style kills and general bloodletting to appeal the broadest market. As long as there is a huge market, that demographic will be a stereotype of its entire industry and its customers. For example, SUVs are seen as a way for a soccer mom to look tough and successful while being able to carry a lot of kids without driving a minivan(lotta dads hate driving minivans, too), where as people who really make use of their SUVs want a vehicle that can haul a good amount of cargo (covered) or 4-7 more people, occasionally tow trailers and might have 4 wheel drive for sticky situations.
Really Nintendo does have some of the most mature messages underlining its games that are really simple and kiddie looking on the surface. Pikmin is all about gathering willing slaves to do heavy labor and fight to the death for their masters. Pikmin 2, especially late-game, even made their efforts purely to feed greed. Majora's Mask had the player coming across dead and dying characters and assuming their likenesses, giving those characters' friends and families 2-3 more days to be with their loved one and giving the dead comfort knowing they leave the world without unfinished business. There's even the theory that Link is dead and the entire game is his final vision/dream. (Which, if Escapist is posting more Game Theory videos, you will soon be able view without even leaving the site.) Twilight Princess might not have touched on the implications as much as it could have, but it did go out of its way to kill the queen Zora showing that the villain is serious enough to leave at least one boy motherless. Metroid is much simpler yet its back story is basically about a woman who fights a pirate organization the made her an orphan twice over and will continue to make orphans if she doesn't intervene.
Maybe that's the angle Miyamoto it coming from. His company's games might have cartoonish violence on the outside, but many of Big N's works have a deeper meaning to their violence than just space marines going "hughh, enemies spotted. Shoot. Kill. Remove spine with Spine Ripper[sup]TM[/sup] DLC." Nintendo sure doesn't make games where 8 or more gruff commandos run out into the open, die in a storm of bullets and blood, then respawn to do it over again for the entertainment of guys drinking Mountain Dew "Game Fuel" and eating Doritos with the Master Chief emblazoned on the bag. Hopefully (and probably), this is just Miyamoto expressing opinion of what he saw at just E3 and we don't find 4-Kids level censorship with the next Star Fox, Fire Emblem, Zelda, or Metroid titles.
