Also, tabbed browsing was still a couple years off for most people, although some browsers got there earlier than others:

> In 1994, BookLink Technologies featured tabbed windows in its InternetWorks browser.[citation needed] That same year, the text editor UltraEdit also appeared with a modern multi-row tabbed interface. The tabbed interface approach was then followed by the Internet Explorer shell NetCaptor in 1997. These were followed by several others like IBrowse in 1999, and Opera in 2000 (with the release of version 4 - although an MDI interface was supported before then), MultiViews October 2000, which changed its name into MultiZilla on April 1st, 2001 (an extension for the Mozilla Application Suite[11]), Galeon in early 2001, Mozilla 0.9.5 in October 2001, Phoenix 0.1 (now Mozilla Firefox) in October 2002, Konqueror 3.1 in January 2003, and Safari in 2003. With the release of Internet Explorer 7 in 2006, all major web browsers featured a tabbed interface.

https://en.wikipedia.org/wiki/Tab_%28interface%29

Also, Opera had a Multiple-Document Interface from the start, so 1995 or so. That's not "tabs" per se but multiple mini-windows inside the main window; much the same "Hey, I can have multiple things open!" deal

https://en.wikipedia.org/wiki/History_of_the_Opera_web_brows...

My point is, you think more about clicking a link when it'll monopolize your whole UI and you can't just stash it in a background tab or mini-window.