They won't use game-key cards.

Has Nintendo stated this?

No, they didn't state the obvious.

They are the ones that incorporated the thing. Why would they never use it?

Because they didn't make it for themselves.

So who exactly was it made for? I mean Switch 1 already has code in box on physical releases. What does this do for anyone?

So there won't be physical releases of ANY first party Switch 2 games? If this is a belated April Fools joke it's not funny.

It's for third parties who are anti-consumer and don't want to make physical games. I doubt the code in the box thing worked well for them, so they wanted something that looks like physical, but still costs next to nothing.

How you get to that conclusion? Do you know what are game-key cards?

Gonna be a long way till artificial demand narrative