That is only partially true. That makes it sound so much easier,however, there are other things that are not mentioned. If you rinse your bottles as you drink them it is not difficult. Sure you have to just clean a keg, but sometimes that requies taking apart the keg to do a thorough cleaning. That can take as long as cleaning a bunch of bottles. You also have lines and faucets to clean. Which also takes time. If you do not you can have problems. You also have to make sure that you do not run out of CO2. Nothing worse than not realizing that your tank is almost empty and running out of CO2 during the weekend. How about running out of CO2 during a party? What about leaks? You just fill a tank and do not notice a slight leak. A few days later you go to pull a pint and there is no pressure because you just lost a full tank of CO2, and have no beer to drink. Then there are the mishaps. Someone opening up ther keggerator to find 5 gallons of beer in the bottom because of a leak.
Sure kegging can be convenient ( I do keg so I understand all that is involved), but it does have some drawbacks. I equate the people that say that kegging is always the answer and is so much easier, to gamblers that always tell you about the money they won, but of course they never talk about the money they lose. So you never get the full story.
ALWAYS turn your CO2 off when the keg isn't in use for long periods (like overnight or while at work).