I see this misconception a lot, so let’s clear it up. The term “threadiverse” originally referred to the “threaded fediverse” — specifically platforms like Lemmy and kbin, which function similarly to Reddit with threaded discussions and link aggregation. Thus, Bluesky and Threads, on the other hand, are not part of the threadiverse because they follow the microblogging model, not the threaded link aggregation model.

It’s also important to note that this usage predates Meta’s "Threads.”

Timeline:

• June 4, 2023: First mention of “threadiverse” I can find on Lemmy (source)
• June 8, 2023: Meta announces upcoming codename “Project 92” (source)
• July 3-5, 2023: Meta launches Project 92 as “Threads,” reusing the name of a previously discontinued non-fediverse product (source)
• March 21, 2024: Meta’s Threads opens its integration to the fediverse (source)