@julia wouldn't it he better if :activitypub: clients were to properly handle #hashtags and if #discoverability wasn't useless because making it a hidden #OptIn setting means noone I know ever activated it successfully...
I think :mastodon: and other implementations should just have an option to display the # instead...
Sadly using hashtags is a necessarx evil because #FullTextSearch - even one's own posts - DOES NOT WORK!!!