It's too perfect that OP would suggest this happened when nothing about Golf on the Switch was known.. But now with it known that it IS on the system it's just such a weird situation...OP could be a troll (he did sign up just for this right?) and he hit the absolute troll-jackpot and his potential shitpost turned out to be plausible..
Inb4 OP is actually one of the hackers and found about all this earlier and posted it and waited for others to find it too..
This is also one big troll http://switchbrew.org/index.php?title=Floginb4 this is a giant troll and everyone is just desperate for something "hack" related on the switch, so everyone wants this to be true.
but i dont know nothing can be certain
edit: this can also be a rare occurence and be inside some dev tool not meant for users.