I'm not sure either, to be honest. It started as an open question.
I'd be happy to implement stuff for you, though. Even if it's your own personal bookmarking service, that's still a quantum of utility. If you have any suggestions, please feel free!
I wish I could; the software stems from the Hacker News codebase, which has no such feature due to having no database. HN has been heavily critiqued for this over the years.
pg mentioned that it'd be possible to add an "alias" username, such that your name shows up scrambled, and that the links redirect to that. But, even that won't suffice entirely, since Laarc Search still has references to zge: https://search.laarc.io/?query=author:zge&sort=byPopularity&prefix&page=0&dateRange=... which uses Algolia, a different service.
