How does Kloak handle metadata? If people can see who you communicate with, they can get access to your social network, which contains a lot of information.
By seeing my location dozens of times, a company can figure out where I live. They might not know what bar I went to last night but they will be able to know that I visit Chipotele frequently.
It's better than nothing, but it seems like strong analytics could still access most of the important information.