This is probably a bit unorthodox, but I use tab session manager [0] for firefox. I started using it mainly to be able to save an open window to return to a project, and it ended up replacing my bookmarks. My issue with bookmarks was always the friction of managing them, but for whatever reason it fits my mental model to organize by open windows.

It's really nice to open up a window or group of windows related to a project that I haven't touched in a few months and it just be one click. Plus, if I open up new tabs those also get saved for the next time. It also works for easily pulling up my regular work session so I don't need to manually open up the 8 or so tabs I always need in a workday. Something toaybe check out if you already organize open windows by task or project.

[0] https://tab-session-manager.sienori.com/

Interesting, I may need to try this out. I tend to have a similar approach but it sometimes results in keeping tabs open for along time, or dealing with a restore previous session everytime I start up.

I keep bookmarks for specific things, sometimes ephemerally and sometimes to keep the link for reasearch, etc. Every so often I make a pass through a bunch of bookmarks and delete the ones that have rotted. Or try to point to an archive mirror if available. That process does a decent job getting rid of the junk. I do need to work on isolating my personal from my work reading when at home. I use different windows but I should be using different profiles or something.