Activism will always remain a matter of personal choice. A religion must involve an authoritarian hierarchy. This is historically untrue. Many sects of Buddhism have no such hierarchy. Hinduism has none.
Pantheism is the least likely of all religions to develop an authoritarian hierarchy.
Our beliefs state that everyone has direct access to divinity. No priest or leader has any more access than anyone else. There is no doctrinal basis for religious authority. Of course every functioning organization requires leadership. The World Pantheist Movement, once it has the required momentum and size to protect it from instability, will be an organization in which members can elect their representatives in the governing structure.