My posts on Mastodon say that no one is permitted to quote-boosts my posts — yet I never made that choice.

(I'm actually OK with others quote-boosting my posts.)

I know enough to be aware this.
Most aren't.

A very large number of people have no idea that someone else made this choice for them.

I suspect the vast majority of them would have chosen the opposite.

I think Mastodon should have represented "user has not chosen" in the JSON-LD.

  "interactionPolicy": {
    "canQuote": {
      "automaticApproval": [
        "https://mastodon.social/users/reiver"
      ]
    }
  },
0

If you have a fediverse account, you can quote this note from your own instance. Search https://mastodon.social/users/reiver/statuses/116117196398220633 on your instance and quote it. (Note that quoting is not supported in Mastodon.)