His comment is too general, therefore making it useless, for instance, define above resistance, could mean many things to different traders
I was being cheeky.
I know that for the ES intraday, you'll quite often have so called fake breakouts. It's just as common, if not more common, than a real breakout that "trends". ES typically don't trend that much. It mostly oscillates. Up and down.
Maybe his comment is true with regards to other instruments or with higher time frames.
But yes, it's far too general and vague to have any real life application in trading. So, I was curious if he was basing it on anything at all. It seems like most trading books and truisms like the one in the OP is based on cherry picking examples that best fits the narrative being told.