Well it _is_ in the standards now and you still see just non-drop timecode being used on it, with the resulting noticeable skew from wall time as the duration gets up there.
Again, it is not a broadcast standard, at least in the US. Pretty sure it's not in non-US markets either. Sure, it's a format that modern decoders and monitors can handle, but it's just not a format that people are concerned about it matching wall clock.
