[photon]

Yeah exactly. The BBCode for that creates this:

<div class="tweet" tweetID="1866972053145870417"></div><a href="https://twitter.com/user/status/1866972053145870417" target="_blank">https://twitter.com/user/status/1866972053145870417</a>

And then there's this code at the end of each page which imports the Javascript script and then iterates over all the tweets on a page and does the replacement:

<script sync src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
<script>
  window.onload = (function(){
    var tweets = document.querySelectorAll("div.tweet");
    tweets.forEach(
      function(tweet) {
        var id = tweet.getAttribute("tweetID");
        twttr.widgets.createTweet(
          id, tweet, 
          {
            conversation : 'none',    // or all
            cards        : 'visible',  // or visible 
          }
		);
      }
    );
  });
</script>