I understood the point Michael was attempting to make - that for his clientele, excessive amounts of soreness isn’t ideal. So it’s important to remember that muscle soreness can be minimal, severe, or anywhere in between.
That is why I love this chart.
It provides great perspective into what’s soreness and what is a potential warning sign for injury. In my clientele, I believe in using eccentric overload during certain phases of the training cycle. That said, muscle soreness will result. However what most fail to recognize is that after one bout there is a protective mechanism (the repeated bout effect) that is activated, which not only prevents soreness for subsequent bouts of eccentric training, but also acts as a protective mechanism - diminishing the likelihood of injury.