Amish will sue but do it under a business name. It's odd that two Amish men are doing it on their own. I wouldn't be surprised if the suit is filed in court under a business rather than the individual Amish men.
Amish is one of the fastest growing religions in this country. Ohio State estimates that a new Amish settlement pops up every 3 1/2 weeks. I live in one of the largest Amish settlements in the US and I can attest that they are growing fast and buying up everything. A doublewide on an acre of land will be bought up by a young Amish couple as a starter home with a one car garage turned into a horse stable. I used to be located right outside of their settlements but they have expanded way past me in just the last two years. I've contemplated selling my farm and making a good profit by selling it but, I've resisted but I don't know for how much longer.
The worse part of living around Amish is not the Amish themselves its the dang tourists that are drawn in.