This is what fuels a lot of my tab hoarding. Tabs are quicker/easier to clean up. This has led some browsers (like Arc) to blend tabs and bookmarks into the same thing, but I’m not sure how that this is the right approach either.
I’d like to explore bookmark manager design/UX in a project of my own at some point. It’s not something that’s gotten much attention in browsers in something like a couple of decades, and while plenty of external managers are out there none I’ve seen really nail it IMO.