Don't get seduced by pure marketing; what actually works is the weight and humidity sensor that most modern washing machines have, which adjusts water and time without needing fancy AI.
The ones that detect fabrics have real utility but pretty marginal: basically they save you from manually selecting the delicate cycle for blouses or cotton for jeans, and the result is practically identical to what you'd get yourself in five seconds.
Where you do notice a difference is in energy efficiency and less wear over time because it doesn't overload unnecessary cycles, but cheaper models already do that. If your 5-year-old washing machine breaks down, buy something reliable from established brands with good technical support; the money you save compared to those premium AI models you can spend on drying clothes properly or protecting delicate fabrics, which is where it really matters.