Did you know? If you want to _mention_ a hashtag like #lichenSubscribe, but you don't want followers of that hashtag to be alerted to your post (because it isn't actually about lichen) you can set the post's “visibility” to “quiet public”?
It will still be visible to everyone, including your own followers as usual, it just won't alert strangers who are following the hashtag and it won't show up in searches for that hashtag.

