I've seen only parts of the first two shows, and the whole thing felt like Real World: Amish to me. No attempt at all to explain Amish/Mennonite beliefs and culture except to portray them as bad and old-fashioned.
And yes, even Amish, who tend to be more conservative than Mennonites, get permission to have electrical generators to run computers, refrigeration units etc. for business purposes (e.g. the Amish in the Arthur, Illinois area have a very successful cheese factory, which has to have refrigeration or they wouldn't be able to sell their cheese legally). By contrast, the quilting shop I was in in Arthur did still use treadle sewing machines, because electricity wasn't necessary to sew or sell quilts (and you should have seen those women pumping those treadle machines as they worked on quilts and other items--they must have unbelievably muscular legs). So, when they can, they may avoid using electricity, but when it's necessary, they use generators in order to avoid dependence on an electrical company. At least that's how it was explained to me.