Are you being deliberately obtuse?

The example I gave is a logical one, which just happens to also work on occasion in the real world. It does not rely on what sort of trader I am, it is a thought scenario, which can and does work in the real world.

Logically, if a large number of people are using a specific TA signal to make trades, their trades will move the market to a degree. Then if one knows what that signal is, one can reliably make money using the same TA signal.

So even if the actual TA signal is a completely random walk, an alert person can make money from that TA signal if they understand that the market will move because some powerful players are using the same signal for whatever reason.

TLDR: A bullshit signal can be used to reliably make money.