Just to be clear, I never said that I supported this belief, but there is no doubt in my mind that it will be something that will forever live with Rodgers and his NFL bio.
Why? A number of reasons. First, because of how many times he and the Packers have come close and failed. Within that, how they failed (blown out or chocked). Second, the number of times he has won the MVP, but still can't get to the big dance. Third, it has been something that has been talked about by the media and fans for a long time and has stuck. Fourth, seems like people always like to compare him and Brady, Brady has won 7 Super Bowls. Lastly, he has become a very polarizing person in the last 5 or so years, so of course his critics are going to keep bringing it up.
Personally, I think its a fair fact to bring up when discussing Rodgers, but never should be used as too big of a barometer for a players success. A lot goes into winning Super Bowls and to blame 1 player for not winning them, is a bit ridiculous IMO.