I think it’s great that you draw more attention to the benefits of being multi-passionate as our current culture often makes people feel bad for not having a singular focus.
Articles such as this one change that perception and give multi-passionate people permission to be who they are and to use their skills.
At the same time, I think society as a whole doesn’t only need multi-passionate people (whether we call them Scanners/Renaissance People/Multipotentialites). It also needs specialists.
For instance, if I had to choose a heart surgeon, I’d probably pick one who had a singular focus in that area. And specialists can be extremely creative, too. For instance, bestselling author Elizabeth Gilbert is a self-described “jackhammer.” Her singular passion is writing and yet she’s definitely not one-dimensional.
So, as a multi-passionate person myself, I want to jump to the defense of specialists. I think both expressions of passion/purpose are completely legitimate and needed.