And since it's been seen/tried by countless members of the public so far, how do you come to that conclusion?
Step 5 of 5 had nothing to do with future disruptions, "future disruptions" was a term coined under Elop's tenure, "Step 5 of 5" was before his time. Future disruptions was loosely defined by Elop/colleagues, so that it could ultimately be associated with anything, not just locked into something Linux/FOSS-based.