Dear Maintainer,

On an installation in a fresh sid chroot I got a popup that said
  Firefox automatically sends some data to Mozilla so that we can
  improve your experience. [Choose What I Share]

And the button took me to about:preferences#privacy with

Firefox Data Collection and Use
We strive to provide you with choices and collect only what we need
to provide and improve Firefox for everyone. We always ask permission
before receiving personal information.
[Privacy Notice]
  [ ] Allow Firefox to send technical and interaction data to Mozilla
      [Learn more]
      [ ] Allow Firefox to make personalized extension recommendations
          [Learn more]
  [ ] Allow Firefox to install and run studies [View Firefox studies]
  [ ] Allow Firefox to send backlogged crash reports on your behalf
      [Learn more]

And none of the boxes checked.
I assume no-telemetry-by-default is a Debian configuration item?

The pop-up should be removed, since we aren't collecting any telemetry,
and there's no need to worry the user with "hey we're collecting
telemetry, disable here!" and then there's nothing to disable.
Is there undisableable telemetry? Or is the pop-up wrong?

Best,
наб