I don't know the percentage of Amish communities that use tobacco products, but do know that quite a few of them do.
The community we lived in it was strictly forbidden, my cousins in Lancaster smoked regularly, LV's cousins in Smicksburg all had their favorite brands, and he used to admire how his grandpa smoked a pipe.
There are many Amish in Lancaster that raise tobacco as means of supporting their family.
Back in the late 80's a new Amish community was starting in Wisconsin, my parents bought a farm there and we planned to move thinking the church would be almost a mirror copy of the one my parents had been married in. This little community had a lot of problems before it ever even really got started when a bishop moved in and decided to have more of a Lancaster style church and one of the points on the ordnung would be that the men should smoke cigars or pipes. That by doing so they were portraying a humble spirit.
My parents chose not to follow through with that move, thanks in part to tobacco.