Keeping every tab in your trail of research is like using a highlighter on evert page of the book you’re reading because “it’s all important”. I don’t believe it’s ultimately productive for the actual goal.

I also use a window and the tabs within it similarly to the OP of this thread. They're usually used to complete a task and then the entire window gets closed.

Bookmarks for frequently visited recurring links.

Bookmarks that I visit multiple times a day (Calendar, Email, etc) get pinned.