On whether deloading is needed:
Take a look at this program (I'm serious, actually read it) and see what kind of volume is involved: www.dragondoor.com/articler/mode3/80/
Also consider that those doing a program like this have already probably tripled their strength from their starting point and are using very serious weights, much more demanding on the system than the weights of a new trainer.
THIS kind of program calls for a deload.
You can decide for yourself, after considering the volume and intensity of work done here, how your program compares and whether it makes sense that likewise it has need of a frequent, programmed deload.
That is not to say that in the passage of time you might not evaluate your own situation and feel, perhaps correctly, that a week of low demands on your body might be a good thing at that particular time.
Now, if DeFranco's got it programmed in, then if want to follow his program not a variant, then do it (else you are not following his program, but a variant.)
Myself, I think that anyone who needs a deload on that kind of volume would never last in the gulag.