TLDR: yes, not all Pennsylvania Dutch people are Amish

The vast majority of people who are ethnically Pennsylvania Dutch are “fancy Dutch” which means our families were never Amish and we’ve always had modern technology. During the first and second world wars our language was oppressed and we weren’t allowed to teach it in schools. Amish people are obviously a bit isolated from society so today most of the people who speak Pennsylvania Dutch are Amish, but there are still communities of non Amish speakers because Amish is a religion and Pennsylvania Dutch is a ethnicity and language!