Bots and AI can be very helpful and can make your life easier, there is no doubt about that. Those tools can give you better insights and help you make better decisions, but they certainly can not predict the future, like predicting the outcome of a football game or something like that.
Those gamblers clearly don’t know what they are talking about. Without having to know how those tools work under the hood, and just by using common sense, you can tell that what they are saying is not true.
They, bots and AI automate things, and make our life easier, but to use them efficiently, we must have enough knowledge and experience by ourselves about the market. It's first mandatory condition, and next ones are knowledge and experience about these tools, how to set them up, what are parameters and command structures to use and so forth.
The saying is "Garbage in, Garbage out" that is true with Bots and AI tools too. They are powerful and can save our time, eliminate human emotion, but we as users must set up those bots and AI tools smartly and accurately too.