I get what you’re saying, but as of now a lot of people new to the concept of the Fediverse just don’t care. They’re going to join the instances with the most people. Like the Mastodon migration, this will inevitibly result in a “default” instance regardless of how people feel. Not sure if that’ll change, unless something forces people to realize maintaining the decentralized aspect of these servives is very important.
The masses need not understand the importance of decentralization. Only the admins of the instances do. And when admins seek to compulsively accumulate users en masse, rather than close off registration and route to other instances, it’s a pretty obvious tell as to what they’re doing.
“It kinda feels like my filter bubble is being pierced. Can we fix that?”