It would be interesting to know more about the additional users. The banning of Shitter in Brazil is very much tied to internal politics and AFAIK it might be the Brazilian equivalent to MAGA that is currently mass-migrating to Bluesky.
If so, this might be a bad thing for them, as they probably don't want to get perceived as the Brazilian truth.social.
Well, they pretty much messed up attempts at vertical integration, which leaves them as a chassis designer and parts assembler in regards to electric vehicles, which just doesn't have sufficient margins to support their hugely overblown administration (full of former politicians).
My sympathies to the people losing their jobs, but this really comes at no surprise given the many management blunders in recent years.
This is kinda the same idea but made for what you originally asked for: https://garagehq.deuxfleurs.fr/
"Everyone"? I know exactly zero people that have admitted to having a Bluesky account, but I know plenty that have an Mastodon etc. one.
I think this is at most a very regional or specific user bubble thing, and official user numbers for these commercial services are never trustworthy.
XMPP via its pubsub implementation could function similar to ActivityPub, but that part of XMPP is a bit neglected as few apps use it for anything more complex. XMPP's real strength is in real-time communication and I think it's good to stick with that.
This is so painfully obvious that I have a hard time assuming good faith argumentation when people come up with the "population question".
I think XMPP is a nice supplement to ActivityPub instances for more private chat. You can quite easily hook the user database of Mastodon or Lemmy to an XMPP server and have the same user address work for both that way.
Reading such articles, I feel like a hermit or something. I never stopped doing these things they describe as "going back to" and thinking about it, there really isn't any such algorithm I ever used or felt a need for.
The cognitive dissonance is quite ironic isn't it?
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.