I love the notion that if you don't agree with the haters then you are an apologist. It has gotten to the point where I don't even want to point out when Scioscia makes mistakes, mainly because I don't want to agree with the lowest form of fan, the one that has to blame the manager every time a player under performs, the one that feels wronged by bad decisions. It's baseball, one bad decision usually doesn't cost you a game, especially not a game where you left 13 runners on base and hit into two double plays.
As far as the validity of this opinion, well it has more merit than any of us have, but considering the source its at least iffy. How many players have played for Scioscia the last 15 seasons? Which ones come out against him? Well, we have Jose Guillen, Mike Napoli, and Trevor Bell. I am sure there are more but of those three I give credence to Napoli, and that's about it. A handful of guys out of the 100 or so ex players, not bad. I am sure any of us who have managed people in the past would be more than happy having 95%+ satisfaction rating from our employees/team mates.