At the very least, we’d need tech companies to stop encouraging plagiarism.

Artists should be able to share their work without fear of being plagiarized.

Do you live in Western Europe?

I do because it currently doesn't have ads

I like the idea but I don't think that will counteract the gross environmental damage that his data centers cause.

That is by design. From a user’s perspective, the only indication that Bluesky is decentralized federated is the option to select a different “hosting provider” when logging in.

I think it’s reasonable to assume that when OP asked about “joining” each platform, they wanted to use each platform natively.

No. For each Mastodon, Lemmy, or Peertube server you want to join, you need a separate account on the server.

I don’t care

I don’t know what the point of the gif is, so I’m not going to respond to it.

Is Matrix federated? That’s also centralized

There's way more to Wafrn than that, and it's extremely interesting.

You can treat Wafrn like an independent ATProto platform (like Blacksky). It has its own PDS and AppView (which uses Blacksky's Relay), so it's not at all dependent on Bluesky for obtaining posts (assuming those posts are also published on an independent PDS).

What's unique is that Wafrn is actually ActivityPub-first, meaning it doesn't have any issue interacting with Mastodon users, but doesn't have all the same features of a normal ATProto platform. For example must have your account on Wafrn in order to use it (as opposed to blacksky.community, which lets you sign in with an existing account on another ATProto platform); you can, however, sign into bsky.app (or blacksky) with an account created on Wafrn.

Could people in states blocked by the main network use it through these?

Yes, and they wouldn't even need to migrate their accounts to do so (although they probably should).