This is incorrect in that it isn't dangerous to gamers. It's fine. The keycards are account agnostic and dumb in the right way. This obsession with playing off the cart doesn't have a basis in reality. The argument cannot be put in to words so you must speak in riddles and fearmongering. Why are you worried? Can you explain that to me? What do you think will happen?
Okay, so also why do you hate Nintendo so much for doing this when every PC gamer on this forum ditched physical decades ago? Why are we in danger if we go all digital? Keycards aren't even all digital. They are dongle licensing in the best possible way. lol "dangerous," get a grip mate. Propaganda! Do you understand exactly how they work? Do you understand that your physical collection is also currenting slowly rotting and eventually will no longer work. Are we planning for the zombie apoclypse or something because I've got news, if that happens we won't have electricity to play your playstation but we can probably find a way to keep the switch 2 charged. Playstation using so much electricity is a danger to gamers. See how that sounds?
The difference with PC and Nintendo digital games is having a real account. Nintendo has killed off their digital stores and you can now only run things you purchased on decades old hardware. Think of all those digital consoles purchases that are trapped on Wiis, Wii Us, and 3DSes. Hopefully all your old hardware works or you need to rent it from Nintendo with Switch Online.
There have been shutdowns that made some PC purchases unplayable. But at least with Steam, EA, Ubisoft, etc purchases from up to 20 years ago can still be downloaded. Do they all just magically play? No, though surprisingly more on Steam OS that modern Windows. But the point is you can still get the files you payed for and people are doing the legwork and fixing the games so you can still play them into the future. We're also not talking about 40, 30, or 20 twenty year old games. There are some games that are delisted after being sold for only a year or two. Want to play it? Better hope it had a physical release.
Valve isn't perfect and without blame, they killed off XP, and later Vista, 7, and 8 support with Steam. That left people who still game on retro PCs screwed because while you can download the games on a modern PCs, the games have DRM so you need to crack things you own to use it how you previously were without issue.
I don't think they will since user was blocked from downloading patches. So it's unlikely key card will be allowed to have a game downloaded.
The whole thing is ridiculous and what's even more ridiculous is anti-consumer defense force.
The biggest BS thing is those "key cards" are region blocked. Imported a Japanese game? Sure you can "play" it but not on your US account.
And don't forget the Nintendo servers still need to be running to let you download the game. That's why being able to play off the cart is such a big deal. For all the Nintendo fans praising the Switch for all of its physical releases. People sure have been quick to take out there wallets, drop their pants, and bend over to get railed by Nintendo and argue until their blue in the face telling people that it's fine, they enjoy it when others don't want diminishing consumer rights.