That preview window has been a lifesaver. Honestly, as someone with ADD (or ADHD or whatever it's called these days), Wikipedia is a fucking minefield. I regularly have many Wikipedia articles open in sometimes ten or twenty different windows, each with anywhere from twenty to fifty tabs (I open a new window to delineate a completely new tangent, or if opening a new tab will cause the tab icons to disappear, otherwis…
But oddly enough, I found that Stackoverflow's "hot questions" or whatever thing is equally distracting.
I'm on a professional software developer network, and then I see a super interesting and legitimate question aaaaaannnddd... I'm in a rabbithole.
Don't know if it's helpful or not for you, but I found an extension that limits the maximum amount of tabs you can have open at a given moment, I set it to 3-4, it forces me to decide what link I do or do not want to click on. Makes me conscious of my unconscious browsing habits, might be useful for you too: https://addons.mozilla.org/en-US/firefox/addon/max-tabs-web-...