Earlier quoted context omitted.
So even if you only had 100 tabs This is fucking surreal. Why on Earth would anyone want 100 open tabs, besides testing? What's the real life scenario we're looking at here?
I wish tabs/windows worked more like persistent "workspaces". For example, say I'm booking a trip. I always open a bunch of sites (Kayak, Booking.com, lots of hotels, Google Maps, places to visit, etc.) in a single window. In pre-computer times it would be like covering a desk with a ton of papers, books and notes. Gradually I will figure out stuff, book the trip, etc. but the tabs can stay for quite a while. I feel…
FF allows you to bookmark all the tabs you have open into a bookmarks folder.
It also provides a button at the bottom of the folder "open all in tabs"
This works well enough for my taste, but I also use pinned tabs for stuff like fb messenger