A lot of people dislike it for the privacy nightmare that it is and feel the threat of an EEE attack. This will also probably not be the last time that a big corporation will insert itself in the Fediverse.
However, people also say that it will help get ActivityPub and the Fediverse go more mainstream and say that corporations don't have that much influence on the Fediverse since people are in control of their own servers.
What a lot of posts have in common is that they want some kind of action to be taken, whether it'd be mass defederating from Threads, or accept them in some way that does not harm the Fediverse as much.
Meh, federated or defederated, threads poses only the first challenge to the fediverse. There will be other players with their own incentives that will join via ActivityPub, add their own custom features incompatible with the broader world, and entice users with slicker interfaces. Fediverse will need to show it can weather it, especially hard with the network effects of the larger corporations' user bases.
My hope is the pressure will keep open services innovating to better compete and result in a richer experience for everyone.
Best thing that could happen is that reddit would respond with a surprise "we too" will federate with you all, and implement activity pub. Then you have two big actors competing on an open playground. And we grab a drink and enjoy the light show.
Honestly, the reason I left Reddit was the 3rd party api bullshit. If they suddenly federated and I could use Lemmy to subscribe to some of their communities / subs again without needing to be subjected to their bullshit ads and 1st party client bullshit, I’d welcome that.
Competition drives innovation. If something from a walled garden fediverse comes to the broader world as a result, awesome. I mean, if we could federate with Reddit for example, and I could access their subs content but not be subjected to their 1st party app and ads and karma and that’s the stuff on top of their instance, I don’t care what they do on their server.
If anything it may introduce people as a gateway into the fediverse to begin with so when something happens on a corporate instance that pisses them off, they might feel compelled to look into the broader world around them. Not all, but some.
I guess the only big concern most people have here is the Microsoft EEE.