Traders who lose money is to see conspiracies, it’s a totally human reaction to losing in the markets. In general, if you feel like someone is conspiring to make you lose money trading FX, you need to take a break.
The probe into FX market manipulation is grabbing headlines and people who don’t understand exactly what’s happening are using it to solidify their belief in a conspiracy.
Don’t believe it. What traders need to understand is that this is something that happened for one or two minutes, on occasion. There’s definitely a chance you made or lost money on it if you had a position open but large orders coming through at the London fix have never been a secret.