Bluesky is explicitly promoting their system as “choose your own censorship” kind of deal, which in the way it is framed could look very attractive to right-wingers looking for an alternative platform. While this is technically also true for the Fediverse, it isn’t promoted as such, and rather has a reputation for the opposite, as most fedi server admins are center-left leaning.
Bluesky might be also more left-leaning right now as obviously there is little reason for right-wingers elsewhere to switch away from Shitter to another (mostly) centralised platform, but given the overall low user numbers this could switch very quickly.
I guess we will have to see how this develops over time and get some answers from Brazilians that have a deeper understanding of the current social dynamics there.
Due to the language divide it might end up as two distinct social spheres, like Fedi’s Japanese bubble, but that’s a best case scenario for Bluesky I guess.
There are some people hosting their own identity server, but yes the centralisation of the main aggregator server seems to be by design as they even scare people away from trying by talking about the high resource requirements of doing so.
IMHO Bluesky is only federated in the sense that responsibility for content and moderation can be outsourced, but the user endpoint stays mostly in control of Bluesky. This makes a lot of sense if you think about it from a company perspective… outsource the legally and personnel critical parts and keep the ones that are lucrarive for advertisement and can be easily scaled by throwing hardware at it.
But you must be a real sucker to take them up on that very one sided offer…