Your use of Tinyurl doesn't really shorten the URL. Please don't obfuscate unnecessarily.

Ideally, I'd like to delete messages after a day, a month, a year. But HN messages stay online forever and search engines eventually pick up on them

I just don't like being in the panopticon

Link is https://www.aisearch.vip/aisearch#

There are enough dead "short" links on forums already.

that short URL goes to aisearch.vip