ActivityPub replies and inconsistencies

I’m trying to get my head around ActivityPub.

@jannis follows @ghost@threads.net and reposted something they posted on the new Ghost Analytics. I replied, and the reply icon acquired a number 1 against it. All good so far. When I click on the post, I can see my reply :grinning_face_with_smiling_eyes:.

However, when I click on @ghost@threads.net I get the profile information, including following numbers, but am informed that @ghost@threads.net has not posted anything yet.

And if I then click on their 118 following I get an equally perplexing @ghost@threads.net has no following yet message

Frankly, this doesn’t make sense to me :person_facepalming: .

Is this ActivityPub weirdness, is it because I don’t have a threads account, is it because the information is being withheld deliberately, or what?

Can @ghost@threads.net see my reply? If not, the conversation ‘thread’ is going to be extremely short.