The fediverse is not even a teenager
The Fediverse is literally 18 years old this year.
Invented by Eugen Rochko Evan Prodromou. By launching Mastodon StatusNet. In 2022 2016 2008.
Interconnectivity between different software is 16 years old as of last month. Established when Mistpark, now known as Friendica, came out in May, 2010, with support for StatusNet's OStatus protocol already built-in.
Oh, and the term "Fediverse" is from 2022 2016 2012.