"Take a look, it could be a possibility for switch code execution."
Oh my god, it's cringe on another level. This sentence is wrong in so many ways...
Basically the ROM is running in a sandboxed environment, and the space onto which you can write is tiny. Also, it's not permament. I mean that after you restart the emulator, you only keep the jailbreak part, and not the mod (unless you do a save-state). How do you imagine an exploit which would run from a sandboxed ROM on an emulator which is probably also sandboxed (because why would an emulator write stuff to the os), and you are limited to editing RAM of the game?