See being a shooter, especially TimeSplitters, isn't 'dudebro'. Its a weird, generic and hugely vague term. Like, is Uncharted dudebro? Because it's thematically, mechanically, paced and presented differently to Call of Duty, despite both being heavily linear cinematic shooters.
You can do just as much with shooters as you can with action games, role playing games, or anything. Especially when you stop adhering to genre definitions and blur the lines between a wide spread of game design philosophies.
This is why I don't think we'll see a, I guess 'typical', cinematic shooter from an internal Nintendo studio. I think if Nintendo really desperately wanted this, they'd seek out a major partnership deal with a studio well versed in this kind of game design, as the company is far less interested in buy-outs these days, and more interested in temporary partnerships. Even then, with behemoths like Call of Duty really the mainstay for that genre, Nintendo is more likely to work towards making sure those games have a place on their platforms.
If Nintendo were to, hypothetically, commission Retro to build a first or third person shooter, I think you'd end up with something surprisingly different to everything else on the market. Nintendo likes to play to two strengths: power of existing IPs, and new, original games. They don't like to copycat. At least, I see no evidence to suggest they do.