It's not really a problem. Pleroma for example already offers ways you can filter out certain platforms from communicating with you (or do transforms on message

It's not really a problem. Pleroma for example already offers ways you can filter out certain platforms from communicating with you (or do transforms on messages like adding Subject lines or hiding the message body behind a button). PeerTube could do the same; hide content you don't want to see below your videos or maybe whitelist certain places to allow commenting from them.