It saves your time searching and analyzing the market trend but the question is if they are reliable. Signals are not a helping tool that we could benefit with instead, this will be a reason why we fall into into wrong buy/sell position.
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that's right, this signal is very useful for people who want to trade but don't want the hassle of carrying out in-depth analysis of the market, because they only need to take a position according to the signal given. but if the signal is wrong, then it is certain that the position they take will be wrong. so it is the trader's choice whether they want to rely on tools like that, or just rely on their own analysis. i personally prefer to rely on my analysis in my trading.