Something we haven't discussed here is that Reddit (except on niche or local subs) is just on a whole different scale than the Fediverse. The active subreddits have enough users that blocking 10 people from replying to you isn't gonna stop the hundreds of others who still would say the same things in response. Meanwhile on Piefed if I'm a lib and I block 10 leftist accounts then post about how the Tiananmen Square, it's way less likely for someone to come and post the full video.

In fact, it's even worse: if I'm one of the 10 people they blocked and I post the link (since it still appears that I can from the Lemmy side) then another leftist reading the thread from a Lemmy instance will see the reply and won't feel the need to post it themselves, but the Piefed users on the other side won't.

[–] edie@lemmy.encryptionin.space 5 points 2 hours ago* (last edited 2 hours ago)

In fact, it’s even worse: if I’m one of the 10 people they blocked and I post the link (since it still appears that I can from the Lemmy side) then another leftist reading the thread from a Lemmy instance will see the reply and won’t feel the need to post it themselves, but the Piefed users on the other side won’t.

That's not entirely correct as things seem to be right now. It's not a piefed-lemmy divide (yet at least, piefed may start federating blocks, in which case it could be), it's either only the blocking users instance, or all but the blocked user and potentially replied to users instance that can't see the comment.
That might be slightly confusing, so let me give examples:

if you are replying to user@piefed.social (who we presume has blocked you or your instance) in a post on community@lemmy.ml, then only piefed.social will be unable to see the comment, but e.g. lemmy.world and piefed.zip will be able to see it.
if you are replying to a comment by user@piefed.social in a post on community@piefed.social, then lemmy.world and piefed.zip will not know of your comment as it is piefed.social's job to federate the comment to other instances.
if you are replying to a comment by user@lemmy.world in a post by user@piefed.social on community@piefed.social, then lemmy.world might be able to see it, but piefed.zip and all others won't.

In all of these your local instance can of course also see the comment.

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