yes, many have proved that many analysis charts provide benefits. well, if they do have a lot of experience about it, of course it will likely work. maybe you should also try to do analysis from the chart.
I usually don't trust them but i can use their analysis for my basic predictions to determine the price movement because use chart analysis won't enough to predict bitcoin price and i consider the percentages to predict the price use this method is only less than 50% so combine all excluded factor such as feedback news or the demands is more good