I haven’t used either tool but some metadata isn’t privacy related. Properties such as video size, video codec, audio codec, etc are important for playback.

If an instance has an onion address, the text will come through Tor; however, pictures from other instances will still go through exit nodes since only the instance that hosts a community serves the media. My understanding is that Kbin federates everything but I haven’t used it and am unsure how it interacts with a Lemmy for media.

Freedom isn’t free