No big deal anyway, I don't even disagree with that "When it's the time to deload you'll know it" statement , i would just prefer it to be stated a bit more elaborating.
When it's time to deload, you will know that the macronutrients that nurish the somatic cells have become overwhelmed and it's time to decrease the neural load on the CNS to relieve the muscle cells and ATP stores of this stressful stimuli, doing so will provide a recovery benefit and will boost the creatine stores in the muscle cells, plus some T1-T3 hormone respose mechanisms that mean you're going to squat more after this.
Like this ^^^?