Mouse support on iPadOS is explicitly an accessibility feature. It's pretty awkward to use and not what you'd choose if you have a choice.
I’d even call it intentionally designed to be bad, because they don’t want you to use it. Which is the opposite of what the parent comment is implying. They have the ability to port over the full Magic Mouse/Trackpad drivers from macOS with intuitive scrolling and gestures, but they chose to leave them broken and awful to use.
I’m sure Jobs also commented on the merits of juicing, what does that have to do with Dropbox?