I have had, and been told of numerous bad experiences with the Amish around where I hunt in Ohio. I'm not speaking abfout all of them, just those that I have run into or friends have run into problems with.
A general rule of these Amish (not sure if they are different in different places) they go wherever they want, whether it is their land or not, and kill whatever they want. I have never heard of any sort or QDM practiced by them, as they seem to be hunting to feed themselves. The trespassing is the part that gets me the most.
One guy a know has put tons of time and money into managing his place for deer/turkey/waterfowl, and it is overrun with Amish during gun season.
Another fella I know is part owner, and operates almost 1K acres in the middle of a heavily Amish populated area. He has literally gone to thier homes and asked them to hunyt elsewhere, as they do not have permission to be on the land, but they continue to do what they want.
It seems that they prefer to do drives as well. While hunting a large chunk of public land, I witnessed a huge drive come right by me. I was about 25' up a tree and saw the army of orange advancing through the woods. As they got closer I saw blue jeans and chinstraps, and knew exactly what was going on.
It seems as though they drive (or are driven by normal folk) around the from area to area, until they have killed, or pushed every deer to thenext county. Then they probably go to that county and trespass on someone elses land.....