History is an unorganized pile of stuff, I wouldn't be able to find things I once had open possibly months ago - if I'm not lucky I can't even remember what page titles to search for.
In my tab bar things are organized into groups that I collapse when I'm not actively using. Thus I can easily find those GitHub issues, discussion forum posts, datasheets, or whatever else I was looking at when I last worked on e.g. my brother's keyboard USB conversion, which sadly had to be put on hold due to other life stuff.
This could be replicated with bookmarks, but I have no reason to use bookmarks when my tab bar already works the way I want it to.
TreeStyleTabs in Firefox has a feature to bookmark the whole tree you've built. I find that very useful for a similar workflow as you. And keeping the tree structure is important because it lets me back up a level or two in case there were more resources to explore that I've not.
In my tab bar things are organized into groups that I collapse when I'm not actively using. Thus I can easily find those GitHub issues, discussion forum posts, datasheets, or whatever else I was looking at when I last worked on e.g. my brother's keyboard USB conversion, which sadly had to be put on hold due to other life stuff.
This could be replicated with bookmarks, but I have no reason to use bookmarks when my tab bar already works the way I want it to.