I haven't personally experienced the goodness, but many people have begun to use it for trading. Even we do trading based on the particular assets past performance and the ongoing demand. When it comes to AI, it involves in precise data gathering and takes decision accordingly. However in some situation AI can't be same as human minds think. And with cryptocurrency unpredictable market changes happen and at that time how AI works is questionable.
AI uses the same patterns it can find in a past. If lots of traders will start using AI it will be a great idea for manipulators to investigate the same patterns with AI as others but do just the opposite to ruin the strategy of naive traders trusted AI too much. Market is a place where win-win strategy is hardly achieved so mostly any time there will be as winners as losers. Trusting some known tool entirely usually will lead to defeat. Of course, we'll see, but I don't have expectations that AI will replace traders, it will be just another tool for them IMO.