The discussion is about public perception outside City fans, so it doesn't matter if you think the media is bias or not.
Otamendi is seen as a failure of a transfer, a waste of £32m who failed to replace Kompany and adequately partner either Mangala or Stones in Vinny's absence.
Whether you think that appraisal of his abilities is fair doesn't matter (even I wouldn't say it is fair), only if that is the consensus.
And from everything I've read, watched and heard, it is.
The fact that some City fans can't even bear to acknowledge that people on the outside view our players as bad shows a shocking level of blue tinted goggles I'm genuinely staggered exists.