I think the key element here is for each lifter to be mindful of what volume and intensity they best respond to.
I think lifters of h&f often don't go hard consistently and often enough. I was sore and tired as hell when I first began this programming. But I adapted.
But the other thing to keep in mind is that an RPE based program by its nature takes into account fatigue and recovery, because you will adjust the weights to maintain an intensity that corresponds with what you are capable of each session.