They are not isolated.
They are clanish, which is entirely removed from that of being isolated.
Amish say they cannot partake of the modern conveniences of the English world. But they will partake when it avails them to ride in a vehicle, rather than ready their horse and buggy.
They shop in grocery stores. And many, as I have witnessed this in those areas where Amish are in community, purchase eggs, milk, butter, desserts, and meats.
The young people will listen to radios and even watch TV when able. And this is before their time of schadenfreude.
At least their young people still cling to faith and Christianity. That is more than can be said in other communities. Christianity has seriously declined a LOT in many parts of the United States.
I also yearn for a disconnect with technology sometimes. At least with some kinds of technology, perhaps.