Then you missed how the end ties everything perfectly together and makes it one of the most consistent time travel stories ever filmed.

Huh? The default Mastodon app signs you up on mastodon.social by default. Nothing complicated about that:

https://blog.joinmastodon.org/2023/05/a-new-onboarding-experience-on-mastodon/

And the devs faced major opposition for that, because plenty of people accused them of wanting to centralize the decentralized network with that move.