and if you’re really technical and really want to you can even bypass other people’s defederation attempts against you.

Takes away some of the anonymity though, even with domain registrar obfuscation etc., they’d probably disclose the owner to a request from whatever authority comes knocking. And if you’re based in a jurisdiction where piracy is explicitly forbidden, federating with db0 and effectively co-hosting links to prohibited content might open a whole other can of worms. And not everyone is technically competent enough to run and maintain an instance, even if the initial setup works out with one of the how-to’s.