With fewer paper publications, the current supporting membership is edging closer to a voting-only membership already. The perceived benefits of a supporting membership continue to decrease.

I don't consider a voting-only membership to be a poll tax. You have to pay membership dues to be a member of an organization. It's not the same thing as having to pay a tax to vote for your government. Considering WSFS membership dues to be a poll tax presupposes that everyone has a right to vote in WSFS elections without having to purchase a membership.