Even if a two-way block isn’t implemented, I don’t think ignore should continuously suggest that there is content from blocked users, and allowing one to easily read it without changing the block settings.
This is the case with youtube too, if someone blocks someone else they both won’t be able to see each other’s postings unless one of them is a moderator.
I agree could be good for there to be a block feature that is different than the current mute/ignore. I never use those because when I have tried them with a user that is being annoying, I still often read their posts and am annoyed by them when I see there is a button to “show hidden replies.”
Seems like this is more practical for if dealing with a high volume of posting, then would be easier to ignore the footnote about additional comments that may not be worth reading, unless a lot of people express they are upset about whatever was said then it may be a good idea for a moderator to read/respond to that.
Not necessary for users though, especially if they are wanting to not get involved with arguments.