I don't understand why some people think it's weird. Folks with tabs in the 100s just have a different workflow from you.

If I google something, I like having a few different sources or points of view, so I open a bunch of tabs to look through.

Sometimes, I want to switch to a different task, so I collapse that tab tree for looking at later.

Sometimes, inside that tree, there's another topic of interest I want to know about, so I create another tree (with 3-5 tabs for different sources) inside.

I have a tree for music, various trees for work, various trees for interesting topics, leisure, etc.