Unfortunately this is the direction Apple seems to be going with a lot of its software updates lately. Another case in point: System Preferences in macOS Ventura beta!
Is Apple trying to do too much, too fast with its annual OS release schedule? Perhaps it's time they moved to a "tick/tock" model with major new features every 2nd year, followed by a release that focuses mainly on bug fixes, performance, new hardware support, etc? Would this give teams more time to ensure that significant new features like Stage Manager are really polished and well-thought out?