Defederating won’t do any harm to artists, everyone here will remain here, threads will just be a replacement for twitter and nothing will change. Creating a “walled off garden” as you say is actually a protection. We’re excluding the well known threat that is the Zuck. But we’re not excluding any users, anyone can join lemmy/mastodon… Would you partner up with a country run by nazis, even though the people in the country are the first victims ? No because you know their goals are not compatible with yours (I hope), and you know it will only benefit the nazi leaders and not the people anyway. If we just wait and see, it will probably be to late to act, big corporations are the best at fooling people (otherwise they couldn’t have become so powerful)