Hazel doesn't close tabs because it's 'like a trip down memory lane.' Mozilla says it has some profile and tab group features coming later this year that might help her organize those memories.
A Mozilla rep confirms to PCMag that having tons of Firefox tabs open consumes "practically no memory whatsoever."
Is there an extension to change this? I literally want to keep all of my tabs in memory no matter what. It drives me nuts when I change tabs and it reloads the page, or the bank website will only load slowly while I'm looking at its tab.