No wonder the autoclusters format looks just like the one on GEDmatch!
It took me a while to figure out how to get the autotrees. When I finally did, they were a disappointment. For my big mystery group, they were just a bunch of little fragments. I had already done much more extensive connection of the various people the old-fashioned manual way (although relying on other Ancestry trees).
For people who have not spent months of their lives analyzing their DNA matches, I think this website offers a good service for a cheap price. But still, it takes a great deal of study to really understand one's ancestry and one's matches. While I don't doubt that some day, someone will manage to create a true one-world tree based on genetics, the current products are a long, long way from that.