They say it's a lot of fun, you can eat free food, meet other PCT thru-hikers, and discuss, analyze, and buy gear. On the downside, it means that there will be a large group of hikers all bunched together on the trail for several hundred miles. If you want solitude for these sections, they say, start your hike a week or two before or after the ADZPCTKO.
Seeing that I am hiking alone, have never done the PCT before, and am a curious fellow, I plan to start off my hike at the ADZPCTKO. I want to see what it's all about and maybe start getting to know people (even though I expect to hike alone most of the time).