I'm strictly a one tab at a time person.
I'm an Instructional Assistant and often times the teacher I work with hands me her computer to read something or run a video for the class. I can't even count how many tabs she has open, nor can I even see what they are because they're so tiny! When she's out for the day, I'm her sub and she leaves me instructions about where to find slides and lessons on the computer. Instead of naming what to look for, she'll say something like, "review the math lesson - 4th tab from the left." She's aware of her tab habit and the fact that it drives me nuts. We've had many conversations about it. I've threatened to close them and she says, "Nooooo I need them all!" We have a very good relationship so she knows I'm (mostly) joking. I've come to accept there will be 2 millions tabs open when I use the computer and that's just the way it is.
One day, the teacher had to follow an upset student out of the room (we're a special needs class). As she was leaving she told me I was in charge (I have a substitute credential, so I can legally be with a class) and asked me to call the office for behavior support. The kids were working on something at their desks and I was deciding what do to next. After a few minutes, the assistant principal came in and said, "Ms. S. said there's a brain-break video cued up that you can run, maybe the 3rd tab from the right. It should be blue." So I started searching for the tab and the AP was looking over my shoulder. She said something like, "Good Lord! How many tabs are open on that computer?" I said yeah, Ms. S likes her tabs! We both just laughed. It took both of us to find the brain break tab.