Is there a superstition about good anime series having character(s) that run in the ED? At the end of the Carnival Phantasm: HibiChika Special, Kohaku (Koha-Ace ver.) mentions that there is a superstition where good anime all have people running in the ending animation.

Does this superstition actually exist? If so, how true is this superstition? Where did it first start?
I am not sure if there's a superstition in the Japanese culture or just among the animators but according here,


  In a lot of anime, a character (usually the protagonist) will show up
  in the opening or ending credits, running along while remaining on a
  fixed spot on-screen. The character could be running the whole time,
  or start out walking slowly and gradually pick up speed. The
  background is usually of the scrolling kind, but sometimes the
  character actually seems to run through a changing scenery. In any
  case, it's rare for characters to maintain a leisurely speed the whole
  time; usually, this has something to do with either the pace of the
  music, or the animators' need to keep opening and ending themes moving
  fast at all times.
  
  Side-on running and walking cycles are often created by animators as a
  way to get a feel for the characters, and these cycles will no doubt
  be used at some point in the show.