This is rather odd. As a rule the Amish eschew politics and don’t vote. How would they even go about setting up a PAC without using some level of modern technology, like a computer? And the name Ben King does not sound very German to me.
I am calling BS on this.
It probably is BS. However, the Amish might have somebody else do it. While they oppose driving a car, for example, there is no prohibition against riding in a car if a non-Amish drives it. At least this is true for some of them.