Water is wet. In related news, Nintendo fans buy Nintendo ****, probably literally if it was in a box and was marked as a limited time offer.
So where were these 10 million plus Nintendo fans during the Wii U's first 4 months? Or the 3DS first 4 months when it started struggling so bad they had to make a massive price cut? So you've gone from all Nintendo consoles had a good launch so the first month sales are meaningless, to apparently all Nintendo systems keep selling well after launch, so now all numbers are also meaningless.
Congrats on finding the exceptions that prove the rule, both of which are over a decade old. Would you like to go back to the Virtual Boy as well? Oh wait! Nintendo already is!
The Wii U is an especially odd example to bring up, considering how successful pretty much its entire library was on Switch, proving that they probably would have sold well on Wii U if the hardware itself was the least bit desirable and didn't have the Game Pad albatross weighing it down. Besides, we both know the Wii U was sent out to die, as Nintendo was already devoting all its resources towards saving the 3DS before the Wii U even launched. Very Virtual Boy of them, now that I think about it.
By and large, Nintendo fans buy Nintendo games, including a lot of lazy crap like 1-2 Switch; Welcome Tour; or MP Jamboree S2. That was never the question. What was the question was whether the more casual audience would join in, and if EITHER of them would buy anything OTHER than Nintendo games on Nintendo consoles.
The jury's still out on that one, and the Key Card situation Nintendo created isn't helping matters there.
MK World is a pack-in game. Its numbers are artificially inflated by the console numbers. I think that's a grain of salt that should be taken with these numbers, but the numbers are still good despite the game's issues.
You do realize people can buy a Switch 2 without the Mario Kart World bundle right? If Mario Kart World was something people didn't want to play, why are they spending an extra $50 to play it? If the price of the Switch 2 and it's games was suppose to be such a huge deal that would make the systems another 3DS at best and Wii U at worst, then why are all these price sensitive consumers buying a more expensive version of the Switch 2 with a game they don't even want?
OK...
1. "Do I realize people can buy a Switch 2 without the MK bundle?"
Personally, I'm happy to continue not owning World, as there's little about that experience I want to see. My Switch 2 right now is my Switch 1 backlog machine, and I'm ok with that.
Gee, I dunno. Do I?
2. When people buy a new console, they want a new game, especially if they had to sell their old console + games to afford it. Nintendo severely overpriced MK World at $80, but it's $50 if you get the bundle. So yeah, if you want a new console getting the bundle is an obvious choice if you don't care about actual ownership and you think you have any interest in a new MK. I don't and I bought my S2 to play my neglected S1 library, so I didn't.
It's worth noting that the only other Switch 2 1st party game worth a damn, DK Bananza, does not have a bundle so it hasn't enjoyed the inflated sales the inferior game received despite being a cheaper standalone game and being as close to a Mario platformer as the Switch 2 has.
Just saying, dude, you're taking rage bait from (so far, unnamed) online personalities a little personally.