Precedents like the German government running a Mastodon server are important beyond the obvious reasons. They reinforce the urgency of serious public funding for open code.
If we treated open code as part of the essential infrastructure of the 21st century and funded it at billions of USD/EUR as opposed to tiny grants here and there, the "fediverse" model of interconnected, self-governing communities would become the norm, not the exception.
See also (but not only): https://publiccode.eu/