You need only look at this page to see you are wrong. Note how shangsung111 uses the word "good" for chess moves. Not exactly the way you have proposed. His "good" move that doesn't worsen your situation could well not be a "best" move that improves your chances. An accumulation of such "good" moves may lead you to miss out on a winning line.
That's irrelevant, how he uses it. I might use it because I'm enjoying an ice lolly. That doesn't mean it can only be used for that and not because a currency note I paid with is not a forgery.
Think about it some more and be prepared to alter your opinion. People would catch on quickly and in any case this alteration is for the benefit of academics and professionals. Not for this discussion, really.
You need only look at this page to see you are wrong. Note how shangsung111 uses the word "good" for chess moves. Not exactly the way you have proposed. His "good" move that doesn't worsen your situation could well not be a "best" move that improves your chances. An accumulation of such "good" moves may lead you to miss out on a winning line.