Patched YouTube NSPs exist in a complex legal space. The app itself is freeware distributed by Nintendo for free on the eShop. Some community members argue that since no money is lost and the app is not commercial warez, the patched version is merely a "gray area" mod. However, YouTube’s Terms of Service explicitly prohibit modifying its client software to bypass ads or authentication.
If the official YouTube app loads instead of the exploit, you have either installed the wrong version or your firmware is too new. Patched Youtube Nsp
Sigpatches must be updated to match your current system firmware version to allow the installation of unofficial NSPs. Patched YouTube NSPs exist in a complex legal space