(just a few thoughts I wanted to write out)
Don’t get me wrong, I love the local and federated timelines, but after thinking about it I realized that it’s also the cause for a lot of drama.
Email and Xmpp never had such a big problem with cross instance blocks. If you think about it, all federated content is blocked by default and only becomes available if a user searches for it and subscribes to it. Before that, the server has no idea what is out there unless a relay is used. But there’s two exceptions… the local timeline and the federated timeline.
These are great to get stuff started and kickstart the following process, but are forcing people to receive content that they might not want to see.
Where previously a block would only be necessary whenever a malicious user messaged me directly, now we have to deal with the need to curate content of public timelines in order to avoid problems with local or remote users.
The instance admins have full right to decide what is hosted on their instance and what not. This is not about free speech because you are not entitled to using someone’s server in a way they don’t want, but about creating complicated dilemmas and tough moderation choices by forcing together content and users that could be drastically different in beliefs or preferences by using timelines which are understandably very appealing to use.
Maybe all posts should be unlisted by default and both timelines, whether on Lemmy or Mastodon only contain whitelisted user accounts to give your instance’s users and remote users a few recommendations.
You said it yourself, what most people want (and seem to think this is) is a forum, not a fediverse. Imo a lot of the users who feel a strong need to control everything for everyone will end up leaving, since this is closer to what reddit used to be (you went to r/all and it showed ALL, not the watered down version that they forced for advertising reasons) and we all know it’s not for everyone.