A lot of people dislike it for the privacy nightmare that it is and the threat of an EEE attack. This will probably not be the last time that a big corporation will insert itself in the Fediverse.
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.
What actions can we take to deal with Threads?
Yes, if all the MTA admins refused to SMTP with Google, Microsoft and Yahoo right from the start email would still work. Right now it doesn’t. We don’t want a repeat of that, so let’s defederate from any big corp or anyone who federates with any such.
If you don’t, you’re dead in the long run.
Email doesn’t work? I think you are being a little hyperbolic.
Have you operated your own MTA and tried to get reliable mail delivery to Google, Microsoft or Yahoo? If not, you should try.