Probably due to my age, I religiously close every tab after I read it. If that gets more than a dozen, I literally quit the browser and declare bankruptcy because it’s not worth it to sort through the mess of tabs I clearly am not using.
Firefox is old too. I’m sure it could manage memory better, but couldn’t we all? If you have tabs in GC and using CPU when you aren’t using them, kill them maybe? What else is that tab doing all day when you aren’t looking?
I’ve never understood why people keep so many tabs open and why they’ll literally switch to an entirely different browser platform rather than change a bad habit