Just a friendly warning - if you criticize officials on Yappi be ready. You will be called out for your ignorance of the sport and/or told if you can do it better, grab a whistle. Both are ridiculous responses to an obvious problem.
I am not one that generally criticizes officials any more. Used to, but I wasn't a very happy or pleasant person when I was doing that. Over time I realized that I'm pretty sure that every game I have ever attended had several stinker calls, a handful of questionable calls, and maybe one or two abominations. However, I'm also pretty sure that officials are human, vantage points create different impressions of what is seen and not seen, and that I have never seen officials determine the outcome of a game. At worst I have seen officials create an obstacle for a team or seem to create an advantage for another team, but players and coaches make thousands of decisions and take thousands of actions during a game. E+R=O: the event of a ref's call, plus the players' and coaches' reactions (adaptions, change of strategy/personnel, overcomer mentality, etc.) results in the outcome. Focusing on what I perceived as bad calls stole my enjoyment of watching sports and, truth be told, was a distraction from the coaching and player mistakes that actually determined the outcome.
While officials on forums do seem to be a little on the defensive side with a hypersensitivity to criticism, they tend to circle the wagons around their errant brethren and sisteren, and they do seem to fall into an "us vs. them" mentality, when I look at how fans treat officials, I understand it.
"Grab a whistle if you think you can do better" could be a sophistic response to criticism, but I think you may be throwing the baby out with the bathwater with assuming it is. Volunteer to ref a church/community/intramural game. I have done it - and my sympathy and empathy for officials increased exponentially. Just saying.