Peertube

You're right PeerTube isn't necessarily privacy friendly in general sense. I suppose what is meant in the video is that on PeerTube some big tech company isn't registering every move you make. Personally I would use the word ethical here.

There's a Lemmy community dedicated to promoting fedi. It's !fedivangelism@lemmy.ml. Might wanna cross-post there @ericbuijs@lemmy.ml.

In theory it's not indeed, the is indeed shared between multiple instances, but in practice it's much better.

Since it doesn't rely on advertisement and is fully open source, the fediverse has very little tracking, and no one uses its data for advertisement. It's also not full of the dark patterns that are often used for tracking. In the end your data is much less abused than on other platforms. It might become an issue though if an ad corporation starts running their own instances and federating with everyone.