What you describe is the natural outcome of having a single message loop with synchronous handlers, and describes e.g. Win32 just as well - a sequence of keys would simply end up as the corresponding sequence of window messages in the queue, and processed in order.
Where we partially lost that is when UX started to get async. It's not fundamentally incompatible with well-ordered input messages, but in practice, people who write async code all too often forget that it's async all the way (and not just for their favorite scenario). And so you get travesties such as textboxes that let you type text into them, and then erase all that when the app or the page is "fully loaded".
Where we partially lost that is when UX started to get async. It's not fundamentally incompatible with well-ordered input messages, but in practice, people who write async code all too often forget that it's async all the way (and not just for their favorite scenario). And so you get travesties such as textboxes that let you type text into them, and then erase all that when the app or the page is "fully loaded".