True, wordpress addon is the easiest way to join the fediverse.
There are already hosting services that do the technical back end install and maintenance. Owning a domain, with a few clicks anyone can host their own mastodon instance (for fans and paid subscribers), friendica for own complex postings and attention to subscribers, peerTube for video and audio or castoPod for podCasts, to mention a few.
The main detail:
Your domain, your hosting your data and copyright!