I seriously doubt the rule. Do not overtrade....
The negative result that would normally be "pinned" on overtrading may simply be:
(As usual, the 2nd point is the most extensive....)
1. System not correct.
a. If your system does not provide you an edge, frequent trading simply amplify the result.
"Nothing wins more than superior research and preparation" (You are enjoying/using the thousands of hrs of work from the AIMS team and Chaos theory)
2. Trader not applying system correctly.
a. Trader not following the system.
b. Trader pshycology - Risk management not correct, the trader accumulate mental stress, application of system deteriorate...
c. With system applied correctly, there is no "cleaner" or "better" or "grade a" setups.... only a correct setup. A setup is a setup. No-one knows if the next setup will be loose or win, but not being IN a correct setup you definitely loose. (assuming if you do not trade, you are operating at a loss?)
d. System components not fully understood. To follow an indicator not understanding HOW and WHY it shows one what it does. Ownership not followship...
Luck = LABOR UNDER CORRECT KNOWLEDGE
e. Every system have loosers. If you "filter" trades incorrectly, you may well end up with the loosing trades and miss the winning trades it provides.
If you do not "like" or "cannot" make a trade every few minutes, key market times is the way out (London/USA open), or higher timeframes.
You should have an edge, trust it, trigger it, do not hesitate, 10sec or less....

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AIMS - The art of Trading markets successfully
Fractals is the foundation of AIMS for me. EVERY trade opportunity starts there.
Not a comprehensive discourse, just my thoughts this morning. Your thoughts, criticism etc. welcomed.
Herbert