>Case in point: Explorer now has tabs. I don't need tabs

Speak for yourself. Tabs in file explorer and notepad are my favorite windows feature in decades. I can't believe it took them this long.

Ya, I just started using them in File Explorer recently and I really like them because I frequently had multiple windows open within the same tree, this is much cleaner. I can't believe it took me so long to actually click the "+" and try it.