How many of those know they're users?
"...whether they want to be users or not." -Zuckerberg probably
Threads isn't fediverse, not yet
You're right that strictly speaking, this article is premature in this group. On the other hand, so far they haven't pulled back from their ActivityPub promises and those numbers will have impact.
A group to share articles, videos etc by media organizations on the subject of the Fediverse. Not personal blogs or such.
What would be useful: if you think the writer of an article missed something important or got something wrong, say so in the comments?