The ZR technology was developed for and is used most extensively in recording studios where there is no scarcity of drums and bass. Did you look at the "Portfolio" link I posted which lists their large and growing number of pro audio customers? What I see over and over when I read pro audio reviews like this one (see link below) is references to improved bass from deployment of these thin panels. And in my listening room the bass heft and clarity improved significantly so I gave away my ASC tube traps. Mass matters with conventional acoustical treatments. It is irrelevant to the ZR panels which appear to represent a disruptive technology with respect to conventional acoustical room treatment. See the comment on improved bass response in:You can't break down low frequency waves or avoid room nodes with such little mass.
As for the Mandalorian, sure, you can do that for voices as they don't contain low frequency information. Big difference between reflections of vocals and acoustic bass, drums etc.