10 hours ago over in lemmyshitpost@lemmy.world you saw a picture that you rather liked but that was getting a lot of downvotes and you didn't know why. You were told by @breadleyloafsyou@lemmy.zip that "lemmy doesn’t like AI"
Also 10 hours ago over in nostupidquestions@lemmy.world you said "I know its an unpopular opinion, but I don't agree with punching Nazis. It makes them look like a victim, and violence never works." You got a bunch of downvotes for that yourself.
Just a couple of examples of situations where an opinion that was against the consensus view of the community got "punished."
There is one nice feature that pushes back against hive-mindedness here that Reddit lacks, at least; you can see your upvote and downvote totals rather than just the single aggregate total. Reddit used to be like that years ago but they got rid of it.
That means that if you say something that gets a ton of both downvotes and upvotes you can at least know that there were a significant number of people who liked it it. Over on Reddit saying anything that netted negative karma felt like screaming into the void.
Oh, and the small population means that downvoted comments are still likely easy to see. That helps too.
Still, the Fediverse does feel more strongly bubbled than Reddit does, from my subjective and anecdotal position.