BlueSky isn’t really comparable, since they have a user-user interaction model as compared to Reddit / Lemmy which have a community-based interaction model. In a sense every BS user is an admin for their own community.

We could say that every user can mod their own threads.

We could, but again, good faith users tend not to be browsing while logged out. They have little reason to do so, while bad faith users have every reason to.

The way Reddit does it at the moment still allows good faith users to identify such behaviours: it shows [unavailable] when someone who blocked you comments, so you know you just have to open that link in a private tab to see the content. I actually have that at the moment as some right wing user blocked me as I would usually call out their bullshit. Still allows me to see their comments and post them to a meta community to call out their right wing sub.