Users have choice over moderation, it's not necessarily something Bluesky can limit, by design.
It's also worth seeing how it plays out with others, while you are still not on the radar. Part of the reason Xitter is getting harsher treatment is because Musk antagonized. That's not the best way to negotiate, especially since he said he'd abide by local rules, like how he said he'd be better for free speech.
Bluesky could implement it in their moderation service, but that does not mean users in Brazil would be impacted by it.
Users could swap moderation service or swap interfaces
The one thing that could happen is the PDS deleting the record for everyone, everywhere
One thing to separate is Bluesky from ATProto. Bluesky is the default implementation of the 4 core pieces, but one could use alternatives for all of them as well and still have their content show up in the bsky app. Imagine if Twitter was open source and federated
If the govt bans a specific app, the people will just use another for accessing the same information.
It's not really tools for circumvention. The Bluesky app is more like Chrome for the ATProto network, the best implementation of a viewer, open source and leading edge. The moderation is less federated, more about user choice, as each labeller is centralized, but there are many of them.
It's also worth seeing how it plays out with others, while you are still not on the radar. Part of the reason Xitter is getting harsher treatment is because Musk antagonized. That's not the best way to negotiate, especially since he said he'd abide by local rules, like how he said he'd be better for free speech.