Why would Xiting be civil disobedience? I don't get it. Not giving out your passwords to authorities when asked is civil disobedience. Blocking a street for a cause is civil disobedience. The decision to not use X is on the same level as choosing not to walk backwards on the street. That's not civil disobedience.
Discussion
As to why so many people have chosen to walk backwards on the street, I couldn't tell you.