[mananaysiempre]

Not deleted, just (formerly?) flagged to death by other users: https://news.ycombinator.com/item?id=41513943. (The HN software seems to kill newer users’ comments more readily, is my impression.) You can enable “showdead” on your profile page if you want to see such comments.

[DeliriousDog]

Thank you! Reading that comment was actually what prompted me to make an account just to reply that, and then when I did it was gone.

[madars]

showdead is essential for Orange Reddit but it will show downvoted comments in unreadable light grey on light grey. So you probably want a user CSS (e.g., with Stylus) like this (italic and the particular color are to taste, of course):

    .c5a, .c73, .c82, .c88, .c9c, .cae, .cbe, .cce, .cdd { color: #222; font-style: italic; }