Of course the tabs would just come back up next time they open the browser window again. Can't risk losing those precious tabs, there might be an important one among them.
As a previous tab hoarder, excessive use of bookmarks is the answer. Organized is more useful, but even a single bookmark folder for all of your "I'll need this later" tabs will do wonders for you, and being a bookmark hoarder is so much more functional than being a tab hoarder. You can actual reset your browser every once in a while.
But then I'll have to take an explicit action to keep my tab! I'd much rather have no action required to save that tab that I'm likely to never visit again.
Yeah, I have a mental cutoff somewhere around 200 tabs. I don't count them, but I routinely so a "close to the right" and get 100+ in the "are you sure" pop-up. I do this about every week or two... And yes, I close a lot of tabs as I go.