In principle he could use alternative tools, like libdragon, but he said even if he did that it was unlikely Valve would permit it, as Nintendo would still be antagonized somehow. And Valve it seems wants to improve their relationship with Nintendo (See: Valve blocked Dolphin on steam, and took down a video showing yuzu installed on the steam deck).

> And Valve it seems wants to improve their relationship with Nintendo

Valve are the 200kg gorilla of the gaming industry and can throw their weight around.

However Nintendo are a 250kg gorilla.