It's worth nothing because it's trying to come here, hungry, grasping, looking to wriggle its tentacles into our federated spaces and suck as much content and data and joy out of us as possible. This is a coordinated corporate effort, with the backing of millions of dollars, to bring centralized control to federated spaces. Their play is that once those spaces become reliant on the traffic that Facebook brings, they'll acquiesce to the weight of the corporate presence, particularly when it comes to developing new features or engaging data security.
Big tech companies do this all the time with promising new open source projects, gaining control of them in the growth phase through their support and audience, and then throwing their weight around once their presence becomes a necessity. Plus, its very likely that the federated nature of instances means that if you post content on your instance of choice, it will end up on Facebook if federated with them. Right now, if you want to avoid the Zuckening, you can do so by not having Facebook, Insta, Tinder, or any of the services that motherzucker runs. If #threads becomes a thing the Fediverse relies on, you can bet your bottom dollar it will zuck the life out of the place if it can't directly control it.