This is a work in progress, a beta and early on when i signed up I remember it saying beta. Just like Microsofts OSs and other beta I tested. So etime a wipe is the only way to go.
I’m guessing some updates may have altered things, possibly Jessie. But I wouldn’t run this on a working installation of Raspian. As SD cards are cheap most would jsut swap in a new Raspian install most likely via noobs and then run the installation.
I’ll be honest I hadn’t realised how much it took over a default Raspian it also broke my Python 3/IDLE3, at least in the default updated Jessie Raspian two weeks ago. Bug a quick fresh install would solve that but I just use that SD card for playing with Cayenne and seeing what it does.
It’s nice to see a project with a responsive forum. Although It would be nice if they where more open with the software, what it alters and how it is working. (Or if they are where to look) BUT that openess is up to them and how they wish to run their software.
It very easy for you not to use it. Just wipe your SD card and start again. Doesn’t take long and quicker than trying to uninstall.