Ah, the digital naiveté of the nineties. Nowadays, cool URLS get changed on purpose so you have to enter the platform through the front instead of bouncing off your destination.
Good point. If you’re the only user with utm_origin=boogers&utm_medium=poop, it’ll be trivial to connect you between websites. It’s all automated, so there’s slim to no chance of making a server admin chuckle while checking the logs, unfortunately.
If you are using Firefox Nightly, you can install arbitrary add-ons (though quite a number of them don't work due to UI difference, container doesn't work too) now after going though some steps: https://blog.mozilla.org/addons/2020/09/29/expanded-extensio...
I'm fairly sure the parent was joking and in full agreement with you. Just so this isn't a point out the joke post, a few years ago I saw a HN post from a bunch of people who used print to PDF, and pdfgrep as a bookmarking solution. It doesn't solve the original problem, but it does act a a coping strategy for when content goes missing. I've been using it for a good while now and it's been real useful already.