[BrenBarn]

I generally have several thousand tabs open at a time. Hacker News is a big source of them. I use Simple Tab Groups and it takes a few seconds to switch from one group to another but I've become fairly okay with that. I use Auto Tab Discard so that most of the tabs are "hibernated" and don't consume so many resources.

Still, it always baffles me how poorly browsers handle high tab counts. Browser tabs should be able to proliferate as freely as spreadsheet rows. There's no reason you shouldn't be able to have 100,000 tabs open, or even a million, and switch between them smoothly. Only the tabs that are active should impose a meaningful performance cost. The tab itself is just a tiny UI element with some text and an icon.