try !privacy@lemmy.ml as I’m not 100% on this stuff

but basically:

some third party hosts let you sign up anonymously with an anonymous email etc.

Only ever connect to the server host via VPN

Get a domain with anonymous WHOIS protection

Stick it all behind a reverse proxy

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Technically Nintendo or whoever could demand your proxy/host to stop doing business with your account, but they won’t have enough personal info to go beyond that and you can just rehost it under new info.