A kbin user has the most upvoted comment chain on that post.
https://kbin.social/m/meta%40lemm.ee/t/458933/How-do-I-block-all-of-Hexbear-from-All/top
sh.itjust.works and a 1-user Lemmy instance called lemmy.magnor.ovh also see and reply to Hexbear comments, though Hexbear doesn't see their replies:
https://lemmy.magnor.ovh/comment/2371501
mods, MODS! the echo chamber is leaking!
i spil my eko![i-spil-my-jice i-spil-my-jice](https://hexbear.net/pictrs/image/1399b8f4-765d-4ecf-ab4a-226392b903bd.png)