It makes no sense to me that there are separate forums for the same topic that have the same names other than "@instance". IMO there should be a single place that is /politics which has the same posts and comments regardless of which instance you're logged into. If these instances are "federated" with each other then they should act like a single shared space. Or at least that's how it seems like it should work to me.
Hell no, I do not want this to happen because then you have lemmy tankies and exploding-head fascists all dog piling into normal discussions, saying preposterously stupid shit to spoil what you read as you scroll through the comments.
You have /r/gaming. /r/games. /r/truegaming. /r/videogames. /r/videogame. Etc.
Each community was slightly different in subtle ways, but some people were subscribed to multiple (basically identical) communities. Others self-sorted into different communities based on moderation style and community vibes.
Not to mention that your idea of how federation should work kind of ignores moderation and community preferences. Communities hosted on Beehaw are tightly moderated. There may be other communities that want something less strict. How do these two reconcile with one another? What happens if a conversation is removed on one instance but kept around on another?
If local mods only have local power, they can get quickly overwhelmed as you effectively need a mod team on every single instance. Smaller instances wouldn't necessarily have the manpower to have their own dedicated mods for literally everything.
Well, instances are all different, independent websites. As an admin, if I can't name a community whatever I want on my own website, I'm probably not participating in this ecosystem.
Plus, 1000 times more posts get posted to r/bigsub than you or anyone ever reads, and 10,000 times as many comments. It creates an environment where no one is actually discussing anything, and are just jockeying for attention.
You won't actually miss anything except for big vanity numbers by just choosing the community you like best for a topic and just... Ignoring the others.