There's a way out of this, thankfully. When social media is *federated*, then you can leave a server without leaving your friends. Think of it as being similar to changing cell-phone companies. When you switch from Verizon to T-Mobile, you keep your number, you keep your address book and you keep your friends, who won't even know you switched networks unless you tell them:
https://pluralistic.net/2022/10/29/how-to-leave-dying-social-media-platforms/
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