I feel Stage Manager makes multi tasking more intuitive. I never really like the previous way of having 2 apps open side by side which was abit restricted to me. Stage manager allows you to slide from the left side of the screen and see your open apps. Then you can open up to 4 apps at one time (for non m1 iPad Pro) and resize them around. I'm able to play a YouTube video in the background and work on my other apps.Without external display for Stage Manager, it's not much different from the dock that's already available. It's just different ways of doing the same thing.