Scapegoat is probably the wrong word but there's no doubt that certain players are given a harder time than others. So, Player A who does fuck all for 80 minutes then goes close with a chance will get his name chanted, Player B works hard for 80 minutes then over hits a pass and gets the dogs abuse. It's always been that way but the internet helps spread the message more quickly that Player B is currently out of favour and the more easily lead amongst us jump on the bandwagon.
It is never nice when a player or other individual gets picked on but I think you have to accept that creating a scapegoat is a necessity for the proper function and cohesion of the tribe and the sustaining of its belief system.Just as the scapegoat would serve the purpose of convincing a primitive tribe that the sun would rise in the spring and that next year's harvest would be better, so it goes with the football tribe.Trying to somehow sustain the belief that things are not as bad as they seem requires a scapegoat, so the tribe can claim that everything would be great if it wasn't for X or Y, which avoids the actual reality and sustains hope in the face of disappointment.It is ugly and it seems ignoble but the use of a scapegoat has to be seen as a necessary evil to serve a greater good: sustaining the belief which is necessary for the tribe to cohere.In broader terms the role of scapegoat should be seen as an honourable one.
The thing I find about the discussions of scapegoats on this site is that, more often than not, the people who drone on loudest on the subject don't really understand what the word means.For starters, it doesn't just mean "person who gets slagged off", so criticising someone for not performing doesn't necessarily meant you're "scapegoating" them.