Do you have a set of tests I can look at to better understand the behavior you've designed? I was relying on the screenshots in the Github issue.
Also, I was unaware of this: "as tags authored in non-Mastodon software that are not included in the body of the post would become visible for the first time"; are you saying that ActivityPub already supports non-inline tags on posts?
@Gargron Got it. That does nullify one of my critiques. Glad to hear it.
I maintain that the behavior introduced with this change should be optional and opt-in by default, and that additional capabilities for hashtags and adding metadata should be explored, as the rest of my post suggests.