We have quite a few Mennonite farms nearby. LOTS of tractors and other power equipment. I suspect the reporter is confusing ‘Mennonite’ with ‘Amish’.
The groups who ban certain modern devices do it mainly to avoid bad "worldly" influences from the outside world. Considering the disastrous impact of Hollyweird, TV, and the MSM on society, I think they have a point. Another reason for avoiding cars is to keep people together in the community, centered around the church. By their rules, Amish and more traditional Mennonites have maintained their communities and culture for centuries, while mainstream culture is now wallowing in manure (e.g. Weiner).