It's probably useful to differentiate between Amish and Mennonite here. Mennonites I know use mad technology for business, including planes. The Mennonite homes I've been in (not many, but a couple), did not have electricity in them, and had root cellars, oil lamps, etc.

An Amish dude did some windows for me and I didn't see any vehicles at his home, and used hand tools, near as I could tell. But idk, this probably changes so much between different communities and shit. Every time I go to town to get groceries, I see Mennonites in aldi. I don't believe I've seen Amish there. The only interactions I've had with the Amish I had to drive to them.

Always slightly uncomfortable.