I think that regarding muscle building, a “deload” really depends person to person. For strength goals, especially for ones that have a “peaking phase” in them, I would say deload is a must. With that being said, hypertrophy training can be so diverse. I worry less about “Over training” regarding muscle hypertrophy, and more about simple adaptation to a program.
In my personal opinion, one of the best things I decided to do was lay out periodization programs for myself instead of doing it intuitively. I think having a plan that builds on the progression / intensity / volume each week is huge. If not just to keep you accountable. I don’t think periodization is required to grow muscle, but it can help you to make sure everything is in place… kind of keep you accountable, in case you plateau.
I did a few videos on our channel about periodization, and I also had a little “deload” rant video with my good buddy Dylan on there a while back. Check them out and let me know what you think.
PERIODIZATION VIDEO - https://youtu.be/Um5DKka1ZZk
PERIODIZATION VIDEO 2 - https://youtu.be/GO6NuzSbJ-U
DELOAD RANT VIDEO - https://youtu.be/d1cjMrRm21c