> he seemed to be saying that clients don't get to go to his site and then reject his use of analytics by (for instance) refusing to load the scripts. I find that attitude quite objectionable.

Yeah, it's perfectly fair and reasonable to have that attitude.

Practically speaking, something like the Collusion extension/add-on or Disconnect extension/add-on allow you to forcefully constrain a wide range of "tracking" activities preferred/requested by the server.