Now Bookwyrm is the future of book reviews. Because it's FOSS and federalised with ActivityPub protocol.
Bookwyrm is a good example of how the fediverse architecture is more profound than social media (and definitely more profound than mastodon that is in the end of the day a twitter imitator).
People may tire of social media inanity, whether it is centralized or decentralized. But there will always be communities that want to exchange information, thoughts, feelings, whether that is about movies, books or any other creative artifact.
Its important that those conversations don't take place inside a giant automated vending machine.
My profile is here, as an example: https://bookwyrm.social/user/sidmitra
It's not FOSS, my other comment on the issue: https://news.ycombinator.com/item?id=36578294