@sabreW4K3 great question. my thought is no but also yes.
The current login via (Mastodon|Bluesky|Threads) is for users who want to add their review to their existing microblogging feed, but Lemmy is not primarily for microblogging.
However, I do think it's valid use case to post a book review to a forum and interact with members of that forum. This does not require login via Lemmy, but instead can be achieved by adding Group feature to NeoDB and make its federation compatible with Lemmy.