It is a matter of responsibility. If you can log into any lemmy instance or mastodon server with the same account, then which server takes responsibility for your actions in the fediverse?
I have seen instances be defederate from because of their lax account creation requirements, or because of harrasment from users from a specific instance.
If an account can log into any instance, then who is responsible for banning the account?
The Netherlands and Belgium are wondering why you are worried at only 60 days. If it doesn’t take at least 100 days, usually at least double that, something must be off, right?