This argument is "true" for every non-static website. In theory, different content can be delivered based on certain criteria (activist, lawyer, etc).

Every interaction with other humans or institutions is based on a degree of trust. Even https was designed by humans and a signing ceremony is being carried by humans that could have bad intentions. Trust has to be created or verified, if interacting entities have no knowledge about each other.

Audit trails were created for this reason and are ubiquitous in the world of the centralized web.