My bad, I missed your quotation marks. My point was that it's very unlikely he got that loss as some form of extreme drawdown in his system and that most likely he overrode his own risk management (1% loss per trade), i.e. that he doubled down on some losing position(s).
He was probably just hard-headed and refused to accept that his breakout/EP strategy which had worked so well for 10 years just wasn't going to work in the bear market of 2022.