Nintendo has a tendency to be a-holes to streamers who acknowledge they are playing pirated or modded games on their consoles. It is why you tend to want to follow yahoo anime rules even if you are obviously emulating a SNES.

But also... what is even the point of this? With the 3ds it sort of made sense since you really had no other handheld options. These days, portable gaming devices are a dime a dozen and the vast majority of the "modern" ones outperform the switch anyway. So people who are planning to pirate nintendo games already know they are 100-200 USD away from a much better experience that can ALSO pirate plenty of other platforms (and has Steam which gets rid of the nintendo tax for those who buy games). Which, factoring in the cost of the flash cart (looks like 59 USD from their US store with maybe 7 bucks of shipping?), isn't even that much.

And for people who want to play it on their TV/PC? It is even easier to outperform the switch.

I guess there are "kids" for whom their switch is their primary and only console. But it has mostly slotted itself into the role as "the second console that everyone has" with a PS4/5 or XBOX whatever as the "primary" for non-Nintendo games. And the people who are going to be buying this cart likely aren't 12 year old kids talking to their parents about why this random sketchy site needs credit card info...