Honestly, I don't understand the idea behind using gold exploits.
Like, I'm not a loot goblin, I don't abuse pickpocketing, I don't force vendor restocks...
Yet I still end up with more gold than I can ever use. I can buy literally every item in the game and still have tons of gold left over.
So why would anyone need to make MORE gold?
I mean, unless they're so hilariously bad at the game that they need to buy literally thousands of potions, what's are they using all this gold for?
As far as balance in a single player game goes, my opinion is that;
Anything that goes against the developers design should be patched. This includes both exploits as well as imbalances within the game.
Since even though there's the "It's a single player game, it doesn't hurt anyone" argument, the core philosophy is that players should experience things as the developers intended, someone shouldn't have to go out of their way to avoid unintended interactions.