Isn't it human nature to release your emotions at sporting events? When the team is doing well, you're happy, you cheer, when the team does poorly what are you supposed to do? Detach your emotions from the team and not care?
Of course I just sit there observing no matter what is happening, but for you full-humans out there, cheering and jeering is a two-way street. Perhaps now as his performances have worsened, Nichols will learn this. For those of you who are against booing that's your prerogative, now don't try to take away someone else's freedom of expression.