Didn't read the reddit post, but usually the way these things work is there are two cert checks. One for the console and one for the game. The game cert is sign

Didn't read the reddit post, but usually the way these things work is there are two cert checks. One for the console and one for the game. The game cert is signed (or there is a signature somewhere) by both the console cert and Nintendo's game-cert CA (not to be confused with Nintendo's console-cert CA which may have the same root but are unlikely the same) in that order. Both are checked server side.