Only about half of those steps go away once you've authorized them for automatic pairing. You still have to juggle both devices, turning things on and off (both at the start and end of the session). Add to that that you might be getting messages or calls during the whole process, then it quickly becomes annoying how much you're having to switch back and forth between devices.

Yet, replacing both of those things with a single device that has both your phone and your maemo tablet in one chassis, eliminates all of the fumbling and juggling, and reduces how much pocket space you need.