I don't agree that it's just marketing. I'm not saying their products are perfect, they certainly have flaws. But the maniacal focus on quality is palpable in their products.

Play a Nintendo game start to finish, you will be very hard pressed to find ANY bugs or glitches. Like you have to hunt really hard to try to find them, they are usually an extremely polished experience. The same cannot be said for most other developers. I LOVE BG3, but it's certainly not as bug-free as a Nintendo game. Same with their hardware + system software, it never crashes, and has a very controlled "walled garden" feel.

There's a reason people use the term "Disney-quality animation". Because it's extremely polished and looks miles better than the competition. Watch the Family Guy episode where the drew part of the episode in Disney style and you can see the difference in action.