Nope, not true, atleast not here. We have over 20 different amish guys that work for us, out of those we have 4 or 5 every day depending in who wants to work that day. Been around them for years and know them well. They do not pay income tax and they don't pay real estate tax because there's a rotation they go through each week of who's house they have church in, so it makes there house 's all churches.
They are not bad people, but they are not quite as honest and as holy as many think they are. They will try to make jobs last longer to make more money and sit around on jobs or leave early when they think you won't find out. Nothing that doesn't happen with non Amish employees, but it's not like the Amish won't cheat a person.
As for the 10 year old driving, I don't have much of a opinion, as far as i know any 10 year old can ride a horse or bicycle up the side of the road. I guess the issues that come about from that are the parents problem.