I honestly feel like stealthing in the game is pretty broken. However, I'm a big fan of self policing in D&D. When it comes to doing broken things in single player video games, I personally don't see a need for the game developers to step in on every one of them. I don't see things like this as a high or even mid priority for a game developer to address.
My reasons for thinking that way are this:
1) Again, self policing. If it's something you feel breaks the game, just don't do it. Or do it in a way that makes sense to you. Such as *I will attack, then quickly take off around to the side, stealth and have one of my teammates distract themwhile I slip away*. A bit of a cheesy example, but I think it makes sense.
2) Some people like to break the game or feel godly. I used to give an old friend grief about how he used cheats in GTA. But eventually, as I got older, I realized that he works between 40-50 hours a week at a job he doesn't want to do, amoung other RL duties that need to be done. Why not let him have fun however he wants to have fun. It's a single player / noncompetitive game.
So even though, I do feel like the stealth is broken. It wouldn't bother me either way if it was changed or not tbh.
