Agreed. I hate Nintendo and their scummy tactics just like anyone else, but sadly the law is on their side here. Also, they’re known for this. Why would you do this and then double down after they start taking down your content.
I am not on Nintendo’s side, but I have zero sympathy for someone who does this to themselves.
I hate Nintendo as much as the next guy, but this isn’t answering the OP’s question in a reasonable way.
From the post I am assuming they don’t want something fiddly like emulators for a “current” system that keep getting taken down and you have to hunt for a new one constantly. Another comment also mentioned performance being an issue for Switch emulation on the Deck.
This might be a solution for some, but it definitely isn’t for everyone.