That wasn't really the point I was making, I was more saying that the majority of negative crowd reactions aren't to do with a particular player, they are more to do with a particular event. Fans groaning when you're keeper lets one through his legs is a natural and unavoidable thing that happens at every club in the world. Yes there are a few boo boys for a Barnes type player even when they do something well, but I don't think that's the main negative noise that comes from the stands.
I do get your point and no I don't necessarily think that negative noises are wholly player focused, however, a vocal minority vs a silent/quiet majority often means that those negative noises are heard over the applause. I also agree that it's mainly an emotional response based on the stress of watching a football team. I'm just saying that when trying to massively change a system and way of playing those negative reactions will be bigger and will play a bigger part.
It's no coincidence that Potter has referenced a few times where the crowd has got on his and the team's back, which is why the team is more confident doing what they do in this environment and why I think we were safe once no fans was confirmed.
Don't get me wrong, I think the fans are what make football great in a lot of ways, I just think that when you need confidence (and patience) to push through a complete philosophy change a sterile environment may well be your best way in. When the fans come back, this system will have fully landed by then and people will know what to expect.