You have misunderstood. The way Bluesky blocking works is not just about controlling who else can interact with your posts, it affects the posts of others too, and applies to every other user whether they like it or not.
See https://github.com/bluesky-social/social-app/issues/7021 for more detail.
A relevant comment from that issue:
> As it stands, if 20 people are involved in a discussion, and ONE single person decides to block someone, then all of a sudden, the 19 other people in the discussion (+ any other viewers) are now inconvenienced simply because one person had an issue with someone else.
> Bluesky does have a bit of a block culture, and as such, this issue is only going to get worse and worse, and threads are going to get harder and harder to read and follow as more and more people get blocked.
> Just the other day I got a notification, and I clicked on it, and once again, the post they were replying to was "blocked", not because of me, but because the person who made the post blocked the person they were responding to. I was trying to make sense of their post, but now I couldn't as I had no idea what the hell they were replying to... then I think I found the post they replied to; it showed "1 reply", but when I clicked on it, no replies were shown.
> Now, this functionality was probably done with good intentions - but you know what they say, "The road to hell is paved with good intentions".
Another comment explaining the problem:
> This is working as intended but I agree it should be reassessed. For example:
> 1. In a popular thread, User A posts some nonsense
> 2. User B replies to that reply explaining why it's nonsense
> 3. User A blocks User B
> 4. Now User A has successfully hidden the rebuttal to his comment from everyone. The only defense against this is if the thread OP happens to block User A.
> This is a pretty serious downside of the "nuclear block" system imo. It creates an escalation ladder of blocking where the first user to hit "block" is advantaged. On the other hand it causes me personally to avoid blocking where I otherwise would, because I want the conversation to still be visible for others.
> There should at least be a "show reply" button on posts that are hidden for this reason IMO. Otherwise you've given every user the unilateral power to hide a reply, for everyone, permanently. If I hide a reply the normal way, it's not deleted for everyone! There is a "show hidden reply" button! The effect of hiding someone else's reply should be consistent across these two ways to do it.