I think that the biggest problem with any EA or automated system is the misconception of how they are intended to function. Many that are available for sale tend to over hype what the actual performance of the system is.
To me, automated systems are 1. Give you an edge 2. Supplement or diversify other investing/trading practices and 3. Provide systematic risk management.
When I say “Give an edge” I simply mean a method which is systematically designed for a risk-reward ratio of greater than 1:1 over the course of a sizable sample size of forward or live tested data. With a higher risk reward ratio, it will, in all theory make more money given enough trades and that it doesn’t blow up the account with a bad drawdown streak.
Most people in the retail space feel that these systems should yield profitable trades 80+% of the time which is unrealistic unless you are using a martingale strategy (which in that case it works until the one time it doesn’t.) Drawdowns and losing trades occur and with the leverage involved with futures, just a couple losing trades will cause people to abandon the system. The notion of making reliable or consistent profit off of any trading system is a red flag and as mentioned elsewhere in this thread, if the system is truly a golden goose, why would somebody sell it to jeopardize their edge?
Automated trading can and in a number of ways does work however people need to understand what an automated system can and can not do.