I blogged about what happened in June, and the financial overview.
That would be true if Threads would support communities. Which they don’t. If they ever would (which I don’t think) then this would be a valid point and need consideration.
For Meta, it would be trivial to add support for communities if they wanted, given that they wrote the entire Threads backend in-house anyway.
Also, even if they don’t support communities, their users might (perhaps even unknowingly) still be interacting with the Lemmyverse, just like Mastodon users can.