@bluethinker - My experience is the same as yours. I have found it helpful in confirming thoughts I already have about certain gear. For example, no matter how highly regarded the EMM Labs DV2i, and no matter how convenient it would be to have the streamer and volume control all in one unit with the DAC, it is simply not going to provide the type of sonic signature I enjoy so, even when one comes up for sale at a good price, I need to pass. My AI query confirmed this.
It would be great if every time I become interested in a component then I could try it in my own system but, of course, that is not possible. If using AI as a tool, I can reduce the field of components I seriously consider, then that is helpful to me. As pointed out by @oddiofyl, AI does pull information from a wide variety of sources including these forums, professional reviews, product marketing BS, and more. However, by providing enough background facts and information, and asking questions that are specific and concise, I have been getting what seems to be practical, realistic, and helpful responses.
On another point, the computing power required to perform the inference and generate responses associated with AI must be huge. It is hard to believe AI activities can be accomplished so quickly and at a cost of basically nothing to the end user. It is not hard to understand why so many new data centers and power plants are planned since what we are doing with AI so far is barely scratching the surface.