I’ll add it later today in the privacy section of your settings. Note it really won’t do much, it just kinda makes it harder (people could still theoretically scrape and pull all of your comments if anybody actually cared)

Added: https://neospring.org/settings/privacy#sparkler:private_comments

Anywho, it exists for parity between responses and comments because they really should be the same thing, they were just designed slightly different.