Since most indicators lag behind price action, do they actually add value, or just create a false sense of certainty that many traders rely on? What's your take on this?
It's that "false sense of certainty" that causes problems and not the indicators themselves. Studying the behavior of the financial markets is a social science and not a natural science. Can you guess what I am going to eat for lunch today? You could look at my past choices for lunch and other related data, and make a prediction that is much, much better than random. Still, you will fall far short of 100% accuracy.