I’m more conscious about the UX of landing on a page in future if this becomes the norm. I would recommend something like:
deleted top-level comments without any sub-comments = no longer visible
deleted top-level comments with sub-comments = deleted by author (visible only to authors of replies)
deleted sub-level comments without any sub-comments = visible only to authors above
deleted sub-level comments with sub-comments = deleted by author (like current)
If want to be transparent - maybe even a count of deleted comments and sats associated with those (at the bottom or when tapping the comment sats total).
no longer visible
deleted by author
(visible only to authors of replies)visible only to authors above
deleted by author
(like current)