Very powerful insight. If I were to take that at its most literal level I would disagree with the idea in so far as entertainment begets rest and, therefore, rest-producing-entertainment is necessary. But you argue in another point that we need to sleep at least seven hours per day — showing you value and uphold rest. So, I can wholly agree with the statement when taken in context.
Now that my analytical side has been appeased, I will take a moment to share a struggle. I find that entertainment seems to be my biggest time waster — not television, but books, podcasts, and music. I find great rest in the solitude of passive reception of entertaining stories. I run to these things because my life has so much focus and intentionality that without a break I become irritable and frustrated with those closest to me. So I build rest into my life but become obsessed with the entertainment parts of rest. I quickly get lost in other worlds and forget my own. And therein lies my tension: highly focused or highly distracted.
This New Years I have sought to balance rest in my life. For example, today I rested from work by going for a brisk walk while listening to a non-fiction audiobook — even though I have one hour left in a riveting thriller. And then on my commute home, I listened to a very entertaining podcast. As I reflect on this, I see that prioritizing rest is respecting yourself enough to do what is best for you. In turn, your well-rested self is able to give out of wholeness. I am learning that resting is ingrained into our humanity and humility. The former shows us our inability to do all things at optimal efforts at all times. The latter enforces our finitude and reminds us they we are limited in ourselves. At the end, rest is a needed reminder that if we want to BE, we must cease DOING in order to REST into our best self.